tag:blogger.com,1999:blog-786315929867469112024-02-19T06:52:38.470-08:00NY4G - Ham Radio, QRP and Summits On The AirAriel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.comBlogger667125tag:blogger.com,1999:blog-78631592986746911.post-80574550608404293882023-05-29T18:33:00.001-07:002023-05-30T17:07:11.714-07:00Variable Capacitor for an End Fed Half Wave Transformer - Is it Worth the Effort?<p>Radio amateurs typically put in a 100 pF high voltage capacitor across the primary of an end fed half wave transformer. I had the opportunity to test the range between 60 pF and 180 pF using a polyvaricon type of variable capacitor.</p><p>The results are as follows:</p><p>Fully CCW is 180 pF fully CW is 60 pF</p><p>On 40m the 2:1 SWR bandwidth is slightly improved from 370 kHz to 390 kHz</p><p>The SWR dip is also slightly better at 180 pF as compared to 60 pF which went from 1.45 to 1.38 </p><p>On 20m the 2:1 SWR bandwidth was improved from 615 kHz to 645 kHz</p><p>The SWR dip was also improved from 1.3:1 to 1.09:1</p><p>On 15m the 2:1 SWR bandwidth was improved more dramatically from 0 kHz (the 15m band was above 2:1) 1155 kHz</p><p>The SWR dip was also much improved from >2:1 to 1.02:1</p><p>The 10m band was hovering just above 2:1 SWR</p><p><br /></p><p><br /></p><p>My standard QRP transformer on a recent build with the 100 pF capacitor measures as follows:</p><p>40m 580 kHz 2:1 BW with a dip at 1.8:1 7.00 MHz</p><p>20m 760 kHz 2:1 BW with a dip 1.03:1 14.14 MHz</p><p>15m 960 kHz 2:1 BW with a dip 1.2:1 21.4 MHz</p><p>10m 970 kHz 2:1 BW with a dip 1.5:1 28.8 MHz</p><p><br /></p><p>Moreover, checking the SWR with a radio configured for field operation with the ATU bypassed with an 8 foot RG174 feedline. The following are the results using the SWR bridge in my KX2</p><p>The 40m band is usable from 7 MHz to 7.25 Mhz with the lowest dip at the CW end at 1.5:1</p><p>The entire 20m band is < 2:1 with SWR being 1.5:1 at 14 MHz dropping to 1.2:1 at 14.35 MHz</p><p>The entire 15m band is < 2:1 with SWR being 1.7:1 at 21 MHz dropping to 1.0:1 at 21.45 MHz</p><p>The 10m band is usable between 28.68 MHz and 29.6 MHz with a dip at 1.7:1 at 28.8 MHz</p><p>So indeed the "goldilocks" compromise for the transformer is with a standard fixed high voltage (1 kV) 100 pF capacitor. Fine tuning it with a variable capacitor is probably not worth the effort. Furthermore, there is a penalty in transformer loss in the 10m band</p><p><br /></p><p></p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/a/AVvXsEiPD8wB-HSQPlwXZblFlv8LIEZgNzH1GDSs8KPXcf1eTmwVqQTjEPhWyx7eHkYZoH4gWQCLe5Ip4DFGmOMh_HJJmxmRhs70r-Tzxw0rXaD-DzQ771XdquO0zX9NhgdURopciKgwTVxms0H8QObGqwi9shn-1g7tD2ortaOSsKJHTUEm4t6-xUmp9euv" style="margin-left: 1em; margin-right: 1em;"><img alt="" data-original-height="434" data-original-width="722" height="240" src="https://blogger.googleusercontent.com/img/a/AVvXsEiPD8wB-HSQPlwXZblFlv8LIEZgNzH1GDSs8KPXcf1eTmwVqQTjEPhWyx7eHkYZoH4gWQCLe5Ip4DFGmOMh_HJJmxmRhs70r-Tzxw0rXaD-DzQ771XdquO0zX9NhgdURopciKgwTVxms0H8QObGqwi9shn-1g7tD2ortaOSsKJHTUEm4t6-xUmp9euv=w400-h240" width="400" /></a></div><br /><br /><p></p>Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-67471291517029334002021-02-26T10:10:00.002-08:002021-02-26T10:13:24.629-08:00MTR4Bv2 - How I pack it for for activations<p></p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjyoAQNPYGPzxI4rHkVM9kqpG0mTtiCpyg5Jf1gd9U9aDUHUmTk-ykyH5q2PaEuzr31hf-JtBssxYQE9W-kovZaC1oK5jNKV5LwOFpDiOOx_7Z3rMiXUjH8ojRKuQEIIVSA9hNvYwgoO3A/s2048/IMG_3946.JPG" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1530" data-original-width="2048" height="478" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjyoAQNPYGPzxI4rHkVM9kqpG0mTtiCpyg5Jf1gd9U9aDUHUmTk-ykyH5q2PaEuzr31hf-JtBssxYQE9W-kovZaC1oK5jNKV5LwOFpDiOOx_7Z3rMiXUjH8ojRKuQEIIVSA9hNvYwgoO3A/w640-h478/IMG_3946.JPG" width="640" /></a></div><div class="separator" style="clear: both; text-align: center;"><br /></div>The key is stowed underneath the black steel spring plate on the right (above). The battery is on the left side. <p></p><p>Below: the phone is attached to the QuadLock while the GM0EUL key is fastened via its magnetic base. The radio can be used without taking it out of the Pelican case. The phone is running the OutdLog app for iOS for logging in contacts.</p><p><br /></p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgQB0O5chS5GDPm14g3s_803yyHEdm89aVjzG8l1pE7lzL1-hYVIHeYFTjgx-a6PkRh86cuusPzAqS_YeCBw3o5_U9OaKWSwDaicPSnQzkm-RODBa17vqtgthYCFtLzkhK3sINz4cxgjbU/s2048/IMG_3947.JPG" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1530" data-original-width="2048" height="478" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgQB0O5chS5GDPm14g3s_803yyHEdm89aVjzG8l1pE7lzL1-hYVIHeYFTjgx-a6PkRh86cuusPzAqS_YeCBw3o5_U9OaKWSwDaicPSnQzkm-RODBa17vqtgthYCFtLzkhK3sINz4cxgjbU/w640-h478/IMG_3947.JPG" width="640" /></a></div><br /> <p></p>Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-67605834854644153932021-02-16T05:12:00.001-08:002021-02-16T05:12:13.011-08:00SOTA Presentation made to the Long Island CW Club<p> </p><div class="separator" style="clear: both; text-align: center;"><iframe allowfullscreen="" class="BLOG_video_class" height="266" src="https://www.youtube.com/embed/N5tcryg-DM4" width="320" youtube-src-id="N5tcryg-DM4"></iframe></div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: left;">Thand to Bob Conder K4RLC for inviting me to present. Dimitris Paliannis N1ED was the moderator and led the Q&A session.</div><br /><p></p>Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-78473685861112937952021-02-15T10:08:00.003-08:002021-02-15T10:11:06.384-08:00Head to head tests - Less Efficient Core vs More Efficient Core - Using WSPR<p><span face="Helvetica, Arial, sans-serif" style="background-color: white; color: #222222; font-size: 15.008px;">The setup is as shown in the image below. The two antennas are arranged as inverted Vee in the same azimuthal orientation with the feedpoint on the south side denoted by the blue boxes. The image shows 10 foot topographic contours and also shows the global imagery to show both the presence of roads and vegetation. The two antennas are separated by about 75 feet of space. The NY4G coupler has the 2 turns primary and 14 turns secondary with the crossover and bifilar winding of the primary. The VY2AJ coupler has the 3 turns primary, 24 turns secondary with a tap instead of the bifilar winding and the turns are wound tightly together with no crossover. Both transmitters are identical 200 milliwatts WSPRlite programmed with their respective call signs. The only variables are the couplers and the relative position of the antennas with each other. They both see the same instantaneous propagation conditions. </span></p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgw-UHgGJYZqxucbUbqsyDszHcz6GArMXbn7MYpJ2Aic0ZpMYhyphenhyphen4y8BWGs6Gj1VTlBulTJIYbsLJ7-WywIdpc98SSEarwm2Yii_uB-8WTqW293V7KcUEr90IR3o1RGXBqK-yQdENVm2iD4/s1435/Screen+Shot+2021-02-15+at+12.33.33+PM.png" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1060" data-original-width="1435" height="472" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgw-UHgGJYZqxucbUbqsyDszHcz6GArMXbn7MYpJ2Aic0ZpMYhyphenhyphen4y8BWGs6Gj1VTlBulTJIYbsLJ7-WywIdpc98SSEarwm2Yii_uB-8WTqW293V7KcUEr90IR3o1RGXBqK-yQdENVm2iD4/w640-h472/Screen+Shot+2021-02-15+at+12.33.33+PM.png" width="640" /></a></div><br /><p>During the first day - NY4G was in the position of VY2AJ and vice versa. During the second day, the positions were swapped to correspond to the image above. The results from the first day below:</p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEibOdK-vtCDqygErjddgq-DKHk4LZHG0Si9W40w53n7D7Nov7lMgdiYdt8U-lirZ8UugA7xtZHnHFYz9fPxAk3Q3zBkc64uq5xY2pNRm9y8VtBREoOw9EVlXdFpbo0pwirGhyphenhyphenMq33-bArU/s2694/Screen+Shot+2021-02-15+at+12.30.03+PM.png" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1168" data-original-width="2694" height="278" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEibOdK-vtCDqygErjddgq-DKHk4LZHG0Si9W40w53n7D7Nov7lMgdiYdt8U-lirZ8UugA7xtZHnHFYz9fPxAk3Q3zBkc64uq5xY2pNRm9y8VtBREoOw9EVlXdFpbo0pwirGhyphenhyphenMq33-bArU/w640-h278/Screen+Shot+2021-02-15+at+12.30.03+PM.png" width="640" /></a></div>The propagation conditions varied throughout the day. There are more watts coming from the more efficient transformer yet the less efficient transformer is keeping up with the more efficient one early in the day. One attempt at an explanation is that there is a positional advantage from the position of NY4G on the first day - perhaps a 'yagi" effect for which the other antenna is acting like a parasitic element. As the sun sets over Europe, with less propagation, the more efficient transformer can still hit the distant stations and the less efficient one, not as much.<div><br /></div><div>During the second day, the positions were swapped to determine whether the "yagi" effect is for real.</div><div><br /></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi6UxQHf2LFfuld_ytOI1X7UfSo592z7h5hjR-_1rtKAqT9fzxSVrCtET4kERFY0XozKz6TQcPD96PkGbe8xtFp6IrMhyphenhyphenaZwiV4q7wye0onIbSJbVP8ErobMfiMolnGWovwwAr6aSXH7sI/s2755/Screen+Shot+2021-02-15+at+12.31.13+PM.png" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1142" data-original-width="2755" height="266" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi6UxQHf2LFfuld_ytOI1X7UfSo592z7h5hjR-_1rtKAqT9fzxSVrCtET4kERFY0XozKz6TQcPD96PkGbe8xtFp6IrMhyphenhyphenaZwiV4q7wye0onIbSJbVP8ErobMfiMolnGWovwwAr6aSXH7sI/w640-h266/Screen+Shot+2021-02-15+at+12.31.13+PM.png" width="640" /></a></div><br /><div>The more efficient transformer (blue trace) hit more distant stations for most of the 6 hour period. The advantage however is seen to be enhanced by the parasitic effect of the second antenna higher on the slope. The only way to isolate this effect is to run identical transformers with the same setup.</div><div><br /></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg78yQMt-zlnJFXEn66GeIE69k7MJaMFXz_LqNG1CZzcWJsdt0-HwMWsPhk5jfX5LKxG0tfydEY5GGdd8Lb9rpXDlxku2xwBop3n-CWuGC8FZtEyTl8k-wW8YkRcENSlGgLnG5nW5aTLDs/s2676/Screen+Shot+2021-02-15+at+1.01.04+PM.png" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1175" data-original-width="2676" height="282" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg78yQMt-zlnJFXEn66GeIE69k7MJaMFXz_LqNG1CZzcWJsdt0-HwMWsPhk5jfX5LKxG0tfydEY5GGdd8Lb9rpXDlxku2xwBop3n-CWuGC8FZtEyTl8k-wW8YkRcENSlGgLnG5nW5aTLDs/w640-h282/Screen+Shot+2021-02-15+at+1.01.04+PM.png" width="640" /></a></div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: left;">With the same coupler, the lower position on the slop appears to have an 800 km advantage in reach over the one that is higher on the slope of the lot nas indicated by the DX10 Table for the entire 6 hour period.</div><div class="separator" style="clear: both; text-align: left;"><br /></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjdJPg2j13emWNpTYIa_ZeK6ObLH_EYcsvRCW_-vWTIpsXSYEqMOyiOJTKYtbmFBnfsh1NiJWBevohRDgBun2mnESFbx3MXO-kE_E-29txZAAkRUPP7Fd_mHtmzI9HxkCR5MyYOq6ZhiJE/s1760/Screen+Shot+2021-02-15+at+1.03.53+PM.png" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1224" data-original-width="1760" height="446" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjdJPg2j13emWNpTYIa_ZeK6ObLH_EYcsvRCW_-vWTIpsXSYEqMOyiOJTKYtbmFBnfsh1NiJWBevohRDgBun2mnESFbx3MXO-kE_E-29txZAAkRUPP7Fd_mHtmzI9HxkCR5MyYOq6ZhiJE/w640-h446/Screen+Shot+2021-02-15+at+1.03.53+PM.png" width="640" /></a></div><br /><div class="separator" style="clear: both; text-align: left;"><p style="background-color: white; color: #222222; font-family: Helvetica, Arial, sans-serif; font-size: 15.008px;">NY4G is at this lower position. If one deducts the 800 km advantage from the previous two days results to sort of “equalize” matters from the “advantaged position” then</p><p style="background-color: white; color: #222222; font-family: Helvetica, Arial, sans-serif; font-size: 15.008px;">the average distance for Day 1 - reported by DX10 Table with adjustment<br />Coupler 1 VY2AJ (3 turn primary) - 5649 km Position 1<br />Coupler 2 NY4G (2 turn primary) -4751 km Position 2</p><p style="background-color: white; color: #222222; font-family: Helvetica, Arial, sans-serif; font-size: 15.008px;">the average distance for Day 2 - with adjustment<br />Coupler 1 VY2AJ (3 turn primary) - 10080 km Position 2<br />Coupler 2 NY4G (2 turn primary) -5509 km Position 1</p><p style="background-color: white; color: #222222; font-family: Helvetica, Arial, sans-serif; font-size: 15.008px;">the average distance for Day 3 - data reported by DXeplorer<br />Coupler 1 VY2AJ (3 turn primary) - 9047 km Position 1<br />Coupler 2 NY4G (3 turn primary) -9797 km Position 2</p><p style="background-color: white; color: #222222; font-family: Helvetica, Arial, sans-serif; font-size: 15.008px;">This suggests that the advantage of the more efficient coupler in terms of distance ratio is somewhere between 20% to 80% better reach.</p><p style="background-color: white; color: #222222; font-family: Helvetica, Arial, sans-serif; font-size: 15.008px;">Stay tuned for similar tests on the lower bands.</p><p style="background-color: white; color: #222222; font-family: Helvetica, Arial, sans-serif; font-size: 15.008px;"><br /></p><p style="background-color: white; color: #222222; font-family: Helvetica, Arial, sans-serif; font-size: 15.008px;"><br /></p></div><br /><div><br /><p><br /></p><p><br /></p></div>Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-24978332866798631102021-02-15T06:43:00.008-08:002021-02-15T06:44:49.225-08:00Owen Duffy Blog Post - Efficient End Fed Half Wave Transformer<p><a href="https://owenduffy.net/blog/?p=12642" target="_blank">https://owenduffy.net/blog/?p=12642</a> </p><p>I wanted to record the URL for this important blog article by Owen Duffy on autotransformer </p><p><br /></p><p><br /></p>Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-20179834517933104222021-02-15T05:28:00.002-08:002021-03-24T05:11:21.109-07:00Efficiency Comparison between Transformer Cores with 14/2 and 24/3 winding ratios<p> Measurements of the efficiency of the transformer cores have been made using the NanoVNA H4.</p><p>The results are documented here:</p><p>https://www.dropbox.com/sh/y4mb9xnwbn70hll/AACghPO0l2TF4UOuJAwyAGv6a?dl=0</p><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: left;"><br /></div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: center;"><br /></div><br /><div class="separator" style="clear: both; text-align: left;"><br /></div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: left;"><br /></div><br /><p><br /></p>Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-10642172122941607602021-02-01T11:47:00.004-08:002021-02-01T11:47:48.718-08:00The NY4GEFHW Store is live! ny4gefhw.com<p> The URL is ny4gefhw.com</p><p>Please take a tour and browse around.</p><p><br /></p><p><br /></p>Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-14140691245333484572021-02-01T04:55:00.003-08:002021-02-01T05:00:03.473-08:00Trapped End Fed Half Wave - What is the Price of Convenience?<p>The thirty meter band is such a "money band" for SOTA activations that it simply can't be ignored. Traditional end fed half waves either ignore it or put in a link to enable that band - e.g. the EndFedZ MountainTopper by LNR Precision (now Vibroplex). </p><p>It is possible to configure an end fed wire with two traps, one for 20m and the other for 30m. When finished, the inductive loading of the two traps shortens the antenna from 66 feet to 58 feet. The bandwidth for 20m covers the entire band. The band width for 40m is reduced but still perfectly acceptable within the CW portion of the band. There are losses associated with this trap - the combined losses from both traps is somewhere between 0.3 and 0.7 dB.</p><p>I used it during my activation of Grassy Ridge Bald W4C/EM-001 as documented by this YouTube video and it worked fantastically well with my LNR MTR4Bv2 and GM0EUL paddle.</p><div class="separator" style="clear: both; text-align: center;"><iframe allowfullscreen="" class="BLOG_video_class" height="266" src="https://www.youtube.com/embed/gR_lNN8i0VY" width="320" youtube-src-id="gR_lNN8i0VY"></iframe></div><br /><p>Here is an image of the end fed half wave antenna. Only one trap is visible.</p><p> </p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhJiy-BGkySlXCbUc0OpqToZX3UQrtOFyS3BSUENDdHBn3QC_-Sn3Ni-tON_n4XwVBlhF-B8799p_-vABozshDo_90uNpnoLEQi1rNFkwZdovhwiBHaT__yRU3yxokx2ZgiVe-YajhPQ-o/s2048/ThtlzXqhR%2525K%2525l6rrYGBV3w.jpg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhJiy-BGkySlXCbUc0OpqToZX3UQrtOFyS3BSUENDdHBn3QC_-Sn3Ni-tON_n4XwVBlhF-B8799p_-vABozshDo_90uNpnoLEQi1rNFkwZdovhwiBHaT__yRU3yxokx2ZgiVe-YajhPQ-o/w300-h400/ThtlzXqhR%2525K%2525l6rrYGBV3w.jpg" width="300" /></a></div><br /><p></p>Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-8078818127790021392021-02-01T04:31:00.000-08:002021-02-01T04:31:47.413-08:00Is it worthwhile to use an RG8X Feedline for SOTA?<p> I was just going through reflection loss calculations and comparing efficient and inefficient transformers.</p><p>On 60m, inefficient transformer are only 58% efficient. Even with low SWR - say 1.5:1, the full entitlement available radiated power is only 2.78 watts. </p><p>Compare that with an efficient transformer at 83% efficiency - radiating into an SWR of 6 but matched with an ATU, the radiated power is 3.77 watts. Full entitlement with no coax losses is 4.15. one would not want to go through this exercise with an RG174 feedline as the coax losses are worse - available output down to about 2.3 watts. With very low SWR say 1.2, you are almost at full entitlement even with RG174.</p><p>So the lesson learned is - have a resonant antenna, however, in the case of mismatched antenna use the RG8X feedline instead of the RG174 and it always beats the inefficient transformer.</p><p>Having said all that, all this efficiency talk can be dominated by antenna configuration for an intended purpose. Let's say the intended purpose is to work close in chasers on 60m. An inverted V with an Apex at 20 feet has close to a 4 dBi at a high take-off angle as opposed to the same end fed wire set up as a vertical (as impractical as that may seem). The vertical will have a null at the high takeoff angle. So an efficient transformer even with low SWR will not work any stations and that inefficient transformer will work those close in stations all day long. There are a lot of factors that have to be optimized for effective antennas and as always - it always pays to begin with the end in mind and work backwards. What is the purpose, configure the antenna for that purpose and optimal gain, and then worry about SWR second and last transformer efficiency. It isn't easy. As often, summit conditions dictate antenna configuration - presence or non-presence of supports and it becomes a "one size fits all" or "one antenna configuration fits all" proposition - the ubiquitous inverted V.</p>Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-12849708247327945992021-01-02T12:45:00.002-08:002021-01-02T12:45:33.653-08:00<p> The "SOTA Package" antenna includes 30m and 60m. </p><p>Base antenna is a 40m half wave with a powerpole connector at the end for any extensions desired.</p><p>Options still include link for 17m, 30m, 60m extension, 80m extension </p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg0BhpufDgTr9jKnFagaAQbUeVwZPXu6B8eFpiP11vCFdS7MBUIzCweNwwF9WPNkEoYODc2Vld9Xdfb_G2auB-9o5fbnFrStlAUHFohvQX6Bik3THDzaARmZQfgjpUxPf3e0A2V2GiIbYk/s2048/XFVvg7fPQmOUhE0RicVNMA.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg0BhpufDgTr9jKnFagaAQbUeVwZPXu6B8eFpiP11vCFdS7MBUIzCweNwwF9WPNkEoYODc2Vld9Xdfb_G2auB-9o5fbnFrStlAUHFohvQX6Bik3THDzaARmZQfgjpUxPf3e0A2V2GiIbYk/w300-h400/XFVvg7fPQmOUhE0RicVNMA.jpg" width="300" /></a></div><br /><p><br /></p>Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-69248691463358938062020-12-27T08:59:00.000-08:002020-12-27T08:59:01.783-08:00Gen 3 of the NY4G End Fed Half Wave (Ariel's Aerials)<p> </p><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: left;">I have added both the 60m and 80m extensions to the system</div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhmgA9QDs6FB87gKpJvT5_RA-Ha-an6KNS-81VKkx1-usfB8a3Y-pUFbYVhpeHuFit8iuZpgHAUshTuRobeupaJaANFbBF3jFEHdSqIJqXm136nUyRzopcotYKBmhrBli09xwsWdYgUlXs/s2048/LWzmNXKNQRqFDuBtdvTiyA.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhmgA9QDs6FB87gKpJvT5_RA-Ha-an6KNS-81VKkx1-usfB8a3Y-pUFbYVhpeHuFit8iuZpgHAUshTuRobeupaJaANFbBF3jFEHdSqIJqXm136nUyRzopcotYKBmhrBli09xwsWdYgUlXs/w480-h640/LWzmNXKNQRqFDuBtdvTiyA.jpg" width="480" /></a></div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: left;">The 60 meter extension is particularly suited to the narrow allocation on 60m between 5.3 MHz and 5.4 MHz. The SWR is at or below 1.5:1 for the entire 60m allocation. See the image below:</div><div class="separator" style="clear: both; text-align: left;"><br /></div><div class="separator" style="clear: both; text-align: left;">Weight of the entire antenna is 316g with the 60m extension - or only 53g heavier than the base antenna with 40-6m coverage.</div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiTY48e17gYTcmVAc2cE5RHf8xhFFn1FziBZgmUF-9YsqngxVuXM3aciKppnUDhpumaNyrIFC1g1XolUC3dJjRo8HBtn28PhXzrGF0mhsOraYqqOVaJ0lqHGtbx6wSTAMhR_TDfTPN65Pc/s2048/ExgFRHDHRiyLz%252BxZdJFa%2525Q.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiTY48e17gYTcmVAc2cE5RHf8xhFFn1FziBZgmUF-9YsqngxVuXM3aciKppnUDhpumaNyrIFC1g1XolUC3dJjRo8HBtn28PhXzrGF0mhsOraYqqOVaJ0lqHGtbx6wSTAMhR_TDfTPN65Pc/w300-h400/ExgFRHDHRiyLz%252BxZdJFa%2525Q.jpg" width="300" /></a></div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: left;">Testing of the antenna using the Reverse Beacon Network on December 26, 2020 showed that the second harmonic of the 40m half wave has a better signal than the third harmonic of the 80 half wave as seen on the 20m RBN hits at 1527 UTC on 14.061 MHz (third harmonic) versus the ones at a later time on14.065 and 14.067 MHz (second harmonic). RBN S/N ratio on both the 60m and 80m extensions were quite good and comparable to the 20m S/N ratio. One can easily be heard on the 60m and 80m extensions.</div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhlx2d_eYJYP1Y3r8saHxyNLwhWMD0_7DDQk6e_tpCc8YzBDFIMf-g9rP3kmCHtJMsw52n7MPhUL8jHTIyQkMtilwpNv1OBk3s6SLxQLvU23ySZiYkSllIbvrtcmSUUeRbu90v9AoTOIHs/s1111/fullsizeoutput_1700.jpeg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1111" data-original-width="828" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhlx2d_eYJYP1Y3r8saHxyNLwhWMD0_7DDQk6e_tpCc8YzBDFIMf-g9rP3kmCHtJMsw52n7MPhUL8jHTIyQkMtilwpNv1OBk3s6SLxQLvU23ySZiYkSllIbvrtcmSUUeRbu90v9AoTOIHs/w478-h640/fullsizeoutput_1700.jpeg" width="478" /></a></div><div class="separator" style="clear: both; text-align: left;">The band width on 80m is quite narrow - with the 2:1 SWR band width being about 100 kHz wide and the extension must be carefully tuned for the rig to be employed. If you are a recent buyer of the LNR MTR4Bv2 or the YouKits 7 Band 2020 version (https://www.youkits.com/products/youkits-hb-1b-mk5-2020-4-band-qrp-cw-transceiver-fully-assembled-and-tested), these extensions would be perfect.</div><div class="separator" style="clear: both; text-align: left;"><br /></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjRPw5RseY_JVjjM1zC5XSW8Y2J2cfQLRXatf2b7hees8hPwK9fgf-1AiUvz-81U3uVCsgIiGnXGT2lQi4LqMAplsNc0xy0KnCuGWeq1ioqfuLx4RxWp3uh4A_JK90hd7-BUzJUp9Yqfl0/s2048/azOjEWSLRK66l9ptjBrJQg.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjRPw5RseY_JVjjM1zC5XSW8Y2J2cfQLRXatf2b7hees8hPwK9fgf-1AiUvz-81U3uVCsgIiGnXGT2lQi4LqMAplsNc0xy0KnCuGWeq1ioqfuLx4RxWp3uh4A_JK90hd7-BUzJUp9Yqfl0/w300-h400/azOjEWSLRK66l9ptjBrJQg.jpg" width="300" /></a></div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: left;">Contrast the above image with the full size 135 foot EFHW Inverted L shown by the image below - shows that the shortening of the antenna has reduced the bandwidth by a factor of 3. The KX3 being my shack radio has no problem tuning the antenna in the upper portion of 75m in the phone portion</div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgOiV_Hzedb17BHx01Sazdd50JwAUHyuJyh9nBPvRZ9IqvKkuoH6_8RwPCNzjH96UyB0phC_Uiqrsjcs5Ee8fQKaKoBQApmqiGX45xo3Ui7J84GUJ5_BvjdQhv0zMAiKuViCPozTgN-fMw/s2048/boflUkj3ShGk9IGm57%252BlQQ.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgOiV_Hzedb17BHx01Sazdd50JwAUHyuJyh9nBPvRZ9IqvKkuoH6_8RwPCNzjH96UyB0phC_Uiqrsjcs5Ee8fQKaKoBQApmqiGX45xo3Ui7J84GUJ5_BvjdQhv0zMAiKuViCPozTgN-fMw/w300-h400/boflUkj3ShGk9IGm57%252BlQQ.jpg" width="300" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><br /></div><br /><div class="separator" style="clear: both; text-align: center;"><br /></div><br /><div class="separator" style="clear: both; text-align: center;"><br /></div><br /><div class="separator" style="clear: both; text-align: center;"><br /></div><br /><p></p>Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-48035359528653514682020-11-26T07:48:00.003-08:002020-11-27T02:26:25.035-08:00Gen2 of the NY4G End Fed Half Wave<p> </p><div class="separator" style="clear: both; text-align: left;">Generation 2 with the following improvements:</div><div class="separator" style="clear: both; text-align: left;"><br /></div><div class="separator" style="clear: both; text-align: left;">Winder is separable from the transformer so it can be replaced if damaged or if one that is impervious to weather is desired, a plastic one may be substituted</div><div class="separator" style="clear: both; text-align: left;"><br /></div><div class="separator" style="clear: both; text-align: left;">The end caps are now made of aluminum instead if walnut. This gives more ruggedness to these parts.</div><div class="separator" style="clear: both; text-align: left;"><br /></div><div class="separator" style="clear: both; text-align: left;"><br /></div><div class="separator" style="clear: both; text-align: center;"><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgeOq2saLIPShtALVIOacP8Px8HPsC_iLd485JIq7QtpW4_50qFqVvSCwJ_lD3v9srVHcrtaX9VLcT9OwftWU5Mia_-eW0vZC2rnMgOkBtU0QHxTRkTFD0uVyxIwoCWUgPRcl0QxH_j5BU/s2048/FEHdh%252BJCRoWGb5tzt58rWg.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgeOq2saLIPShtALVIOacP8Px8HPsC_iLd485JIq7QtpW4_50qFqVvSCwJ_lD3v9srVHcrtaX9VLcT9OwftWU5Mia_-eW0vZC2rnMgOkBtU0QHxTRkTFD0uVyxIwoCWUgPRcl0QxH_j5BU/s320/FEHdh%252BJCRoWGb5tzt58rWg.jpg" width="320" /></a></div><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4kYAJTB8uBuMfRZoobyWYoG_JKhkpdd8sGXZejuv8XOHYb8RYG675vtSy1wPuUpff7pfTb1fuFLIOfJmnkfu_SoyD3blE4uAJ4-KM0HKKz4hcJ8rZukYrt-IlTs0n0q1x6TS8Ch-n5Rw/s2048/nIk%2525JByGTM%252Bk8kEKDT%2525NzQ.jpg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4kYAJTB8uBuMfRZoobyWYoG_JKhkpdd8sGXZejuv8XOHYb8RYG675vtSy1wPuUpff7pfTb1fuFLIOfJmnkfu_SoyD3blE4uAJ4-KM0HKKz4hcJ8rZukYrt-IlTs0n0q1x6TS8Ch-n5Rw/s320/nIk%2525JByGTM%252Bk8kEKDT%2525NzQ.jpg" /></a></div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: left;">Picture shown below is during testing and pruning for best balance across the bands.</div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgbtlutz3LraJH0fxzZUIZ_NVXo-NGzxJfy0R2eWw-87Vbf8d2JKS4Vs7WUY24iRmgWkr8ztRuNnpiQTa_Ujg55uDl8J8Yms23Ji-Ym6x9V6mD2aDuZ1rBMFjmaiprZlvngIbWGf4JcSBM/s2048/LMC22al3QRCfAa%252BQKYzLmg.jpg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgbtlutz3LraJH0fxzZUIZ_NVXo-NGzxJfy0R2eWw-87Vbf8d2JKS4Vs7WUY24iRmgWkr8ztRuNnpiQTa_Ujg55uDl8J8Yms23Ji-Ym6x9V6mD2aDuZ1rBMFjmaiprZlvngIbWGf4JcSBM/s320/LMC22al3QRCfAa%252BQKYzLmg.jpg" width="320" /></a></div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: left;">Walnut winder and transformer box</div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhxVWLMg1e6kHC7huluwiGcb82Fy06CPbeblZ7_ySs5EupKnAqFDrAqAEHJLWxhypffGH8mv58KfOY97b8xHC-NCeGT3RbesfcXgLYJYv3koJS8VkXfkeRv8Jr5s-PrBYkmfd_W0PDyZE8/s2048/H2wFz3LjS3CcjwAkaoNoCw.jpg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhxVWLMg1e6kHC7huluwiGcb82Fy06CPbeblZ7_ySs5EupKnAqFDrAqAEHJLWxhypffGH8mv58KfOY97b8xHC-NCeGT3RbesfcXgLYJYv3koJS8VkXfkeRv8Jr5s-PrBYkmfd_W0PDyZE8/s320/H2wFz3LjS3CcjwAkaoNoCw.jpg" /></a></div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: left;">88 feet of wire in the air for 60m operation. The 60m extension is separable so that the 40-20-15-10-6 can also be deployed - resonant on these five bands</div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi0naKW_Qkx-fsuA7zkFB6pc1i6Mjj8b1wsm3Fk3GESqEwur2m_Gt1exkZAgJLat13xtSo5sETwYK3H2fv9gBUgoyibRZGTaPAP8j3iII4NX87U9HiaokBdH4yDWqpAR86BeCeH24uIZss/s2048/DPJWkEVTRP6CSnmPyvU44w.jpg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi0naKW_Qkx-fsuA7zkFB6pc1i6Mjj8b1wsm3Fk3GESqEwur2m_Gt1exkZAgJLat13xtSo5sETwYK3H2fv9gBUgoyibRZGTaPAP8j3iII4NX87U9HiaokBdH4yDWqpAR86BeCeH24uIZss/s320/DPJWkEVTRP6CSnmPyvU44w.jpg" /></a></div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: left;">Walnut transformer box and white UHMW winder</div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi_uGt4RfpZNNdR8PvsbF5EX_rJsqX-rfPLbtROHTSrIRcPF6NDUBkp1UN628LaKd24teJxriqf04FGp_IK26ggtfXTk2WroS5tEqqJDWTJz3lxwz2oVi9zKgv2NBdz6QC36g2WxDLEHZE/s2048/2JLsC6kISUuN1KxysUuPbQ.jpg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi_uGt4RfpZNNdR8PvsbF5EX_rJsqX-rfPLbtROHTSrIRcPF6NDUBkp1UN628LaKd24teJxriqf04FGp_IK26ggtfXTk2WroS5tEqqJDWTJz3lxwz2oVi9zKgv2NBdz6QC36g2WxDLEHZE/s320/2JLsC6kISUuN1KxysUuPbQ.jpg" /></a></div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: left;">Pruning and VSWR scans - the following are typical from the bottom end of each band<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgEm0OfB2F0GCRC60Zo9rpoiiYi6UG6XQTjfrrSzf6vZ9D7Mi8s6uqZQLlYkr4AKkAO46MbMyEVm2Xc_uQhimd0vBjQTnt4HA66OaXNDm8fBmH8NXHgaX8eqRqUDq7DO8UzuypH8l9amyg/s2048/3%2525hXTsuuRnqkXLJh2%2525Vnaw.jpg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgEm0OfB2F0GCRC60Zo9rpoiiYi6UG6XQTjfrrSzf6vZ9D7Mi8s6uqZQLlYkr4AKkAO46MbMyEVm2Xc_uQhimd0vBjQTnt4HA66OaXNDm8fBmH8NXHgaX8eqRqUDq7DO8UzuypH8l9amyg/s320/3%2525hXTsuuRnqkXLJh2%2525Vnaw.jpg" /></a></div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: left;">to the top portion of the band</div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgETWT9RHoylCXbqzpW8Fbpl5J18-5WqfCvDzp-lDk7HipY6tk_CIp-oN7nolACH27lSHT2QlzJBklPmc-UY5SiyOKrKZJsxE8SIGbdbsWEsjjtcbudD4Fo6VhhgcyZegdZKPJD6Ie7lfI/s2048/1PZ1N%252B0ESTaHLE0rzaOMHA.jpg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgETWT9RHoylCXbqzpW8Fbpl5J18-5WqfCvDzp-lDk7HipY6tk_CIp-oN7nolACH27lSHT2QlzJBklPmc-UY5SiyOKrKZJsxE8SIGbdbsWEsjjtcbudD4Fo6VhhgcyZegdZKPJD6Ie7lfI/s320/1PZ1N%252B0ESTaHLE0rzaOMHA.jpg" /></a></div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: left;">The 60m extension connected</div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjnEaXroWHZhk4FAjZJcY3aMZ6PRQTSOCLa-ZFqx1bVgqkCHXecSYw70QwUngng4_D7idlkVxhyphenhyphenVT5oBiLnqKUTHEdD6c0EFye-PBb8y_5hCEKQMSOzXausbA9QvkAWmKbj7CTzTecX5z0/s2048/8LBcoDE5QNOHgZvPFJVosw.jpg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjnEaXroWHZhk4FAjZJcY3aMZ6PRQTSOCLa-ZFqx1bVgqkCHXecSYw70QwUngng4_D7idlkVxhyphenhyphenVT5oBiLnqKUTHEdD6c0EFye-PBb8y_5hCEKQMSOzXausbA9QvkAWmKbj7CTzTecX5z0/s320/8LBcoDE5QNOHgZvPFJVosw.jpg" /></a></div><br /></div><br /><p></p>Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-12116799621140175442020-11-09T14:24:00.002-08:002020-11-09T15:07:54.031-08:00Antenna for SOTA, POTA, and DXpeditions<p>Initial Prototype: The initial prototype had a turns ratio of 14:2 (14 secondary and 2 primary). It used a single 100 pF capacitor across the center conductor to ground. The tests of this initial prototype after pruning for a best compromise resulted in:</p><p>2:1 SWR Bandwidth on 40 meters is 6.730 -> 7.530 MHz with a dip to 1.3:1 SWR at 7.060 MHz</p><p>2:1 SWR Bandwidth on 20 meters is 13.910 -> 14.806 MHz with a dip to 1:1 SWR at 14.360 MHz</p><p>2:1 SWR Bandwidth on 15 meters is 21.010 -> 22.070 MHz with a dip to 1.6:1 SWR at 21.610 MHz</p><p>2:1 SWR Bandwidth on 10 meters is 29.1 -> 30.8 MHz with a dip to 1.8:1 SWR at 29.900 MHz</p><p>On 10m it is not very usable unless one has an ATU.</p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgJz5mUT6XQog6TnFjRtnY55UaK4xyEhq0vwLNk0hTeOCunRjeguK5u7lGbv7pfP_FenloufH0OcmidlS6nXpntnx1fjHVOuveHVJ-ndyWjv6c-VCB9pKALso7g2SPcGehQdLPeId05a8g/s2048/Kquni5wySluNaU24lF0ybA.jpg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgJz5mUT6XQog6TnFjRtnY55UaK4xyEhq0vwLNk0hTeOCunRjeguK5u7lGbv7pfP_FenloufH0OcmidlS6nXpntnx1fjHVOuveHVJ-ndyWjv6c-VCB9pKALso7g2SPcGehQdLPeId05a8g/s320/Kquni5wySluNaU24lF0ybA.jpg" /></a></div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: left;">The second prototype (photo below) used two 220 pF capacitors in series which technically by the numbers should be 110 pF. My measurements of the capacitance was closer to 130 - 140 pF. This had a substantial effect on making 10 meters usable without a tuner. The results are as follows:</div><div class="separator" style="clear: both; text-align: left;"><br /></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi0tivecUsBRHR3g9-snSgdqJCI09FU3OhRsJkEuRcyvi8KQrVrpokk_Pb6hC3CqDiC_b2f8yVZIUWYro9OMkkC33rjjuBd2jje11qFB_H7pi1oYsdIjRDq2i2zPFOzvmdVlDG-kJwA_Tk/s2048/IMG_3846+2.HEIC" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi0tivecUsBRHR3g9-snSgdqJCI09FU3OhRsJkEuRcyvi8KQrVrpokk_Pb6hC3CqDiC_b2f8yVZIUWYro9OMkkC33rjjuBd2jje11qFB_H7pi1oYsdIjRDq2i2zPFOzvmdVlDG-kJwA_Tk/w480-h640/IMG_3846+2.HEIC" width="480" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiIlvwz7JLzSwJUGxFkAavmzi2gyVEYK-Vza9KJK6yatKkLLDFxhQEGfUHiZ5Pz-IXaytLaWHevOG0dFyKLExPiY9Qh6AHJMg2QHMNT2q6t-KIOvv984sfXF3SQeFHM3DZDwD5IdAMk1nU/s2048/IMG_3843+3.HEIC" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiIlvwz7JLzSwJUGxFkAavmzi2gyVEYK-Vza9KJK6yatKkLLDFxhQEGfUHiZ5Pz-IXaytLaWHevOG0dFyKLExPiY9Qh6AHJMg2QHMNT2q6t-KIOvv984sfXF3SQeFHM3DZDwD5IdAMk1nU/w480-h640/IMG_3843+3.HEIC" width="480" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: left;"><p>2:1 SWR Bandwidth on 40 meters is 6.820 -> 7.510 MHz with a dip to 1.3:1 SWR at 7.150 MHz</p><p>2:1 SWR Bandwidth on 20 meters is 13.990 -> 14.840 MHz with a dip to 1:1 SWR at 14.430 MHz</p><p>2:1 SWR Bandwidth on 15 meters is 20.950 -> 22.270 MHz with a dip to 1.1:1 SWR at 21.650 MHz</p><p>2:1 SWR Bandwidth on 10 meters is 29.1 -> 30.8 MHz with a dip to 1.3:1 SWR at 29.900 MHz</p><p>Being a link dipole for 30m - here are the results for 30m:</p><p>2:1 SWR Bandwidth on 30 meters is 9.730 -> 10.880 MHz with a dip to 1.0:1 SWR at 10.280 MHz with a SWR between 1.3 and 1.2:1 from 10.100 to 10.150 MHz</p><p>A third prototype had the following results (identical in construction to the second one) with the following results.</p><p>2:1 SWR Bandwidth on 40 meters is 6.820 -> 7.500 MHz with a dip to 1.3:1 SWR at 7.150 MHz</p><p>2:1 SWR Bandwidth on 20 meters is 13.980 -> 14.850 MHz with a dip to 1:1 SWR at 14.440 MHz</p><p>2:1 SWR Bandwidth on 15 meters is 20.780 -> 22.280 MHz with a dip to 1.2:1 SWR at 21.600 MHz</p><p>2:1 SWR Bandwidth on 10 meters is 24.5 -> 29.9 MHz (which actually overlaps into 12 meters) with a dip to 1.1:1 SWR which is wide - 28.0 to 28.5 MHz so 10 meters is now perfectly usable without a tuner and so is 12m which is a very narrow band.</p><p>This is one heck of an antenna - requiring no tuner on 40m, 20m, 15m, 12m and 10m and power handling ability as follows SSB 60w, CW - 40w and Digital (key down) - 30w.</p><p>The final product:</p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgvb_mwDpU5EOnPJsQsr5m2prD13CbsC2aSwOzaF4sDccBiuauwVgGV_n5F49G8uzIEXivthzIMy4yXcp3CSfJzA-4OurmGglPcsNnNlBmNR5a-Dgs6L23DfGtcX674jr7ZqLA0IPxz5VY/s2048/IMG_3847.HEIC" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgvb_mwDpU5EOnPJsQsr5m2prD13CbsC2aSwOzaF4sDccBiuauwVgGV_n5F49G8uzIEXivthzIMy4yXcp3CSfJzA-4OurmGglPcsNnNlBmNR5a-Dgs6L23DfGtcX674jr7ZqLA0IPxz5VY/w480-h640/IMG_3847.HEIC" width="480" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><br /></div><br /><p><br /></p><p> </p></div><p> </p>Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-9659476566023794292020-10-25T04:43:00.003-07:002020-10-25T04:57:40.138-07:00All Time New One (ATNO) #315. South Orkney Islands<p>This DXpedition took place between late February and early March 2020 just before the pandemic hit with full force. Because of the pandemic, the major DXpeditions have been cancelled. The one going to Midway was one I was looking forward to but became victim to the pandemic. The last major one I was able to work was VP8PJ and I was able to make contact on 30m CW. Between the sunspot minimum and the effects of the pandemic - I will likely be stuck on #315 for a long while.</p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj0kp4_hGjQokQg0Xvxci1EAIvSfGKH0l3aL6AFP4xtNWzO-FJ6qP4zpOd3nxTXIT-0qJbLhSLP4eJt2hcKYZ9wV23TE5RaLdI60lcC8Nke75vqMIRayp2nKYFA8zaO67t0uXsvBii-Cw4/s2137/Screen+Shot+2020-10-25+at+7.39.18+AM.png" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1067" data-original-width="2137" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj0kp4_hGjQokQg0Xvxci1EAIvSfGKH0l3aL6AFP4xtNWzO-FJ6qP4zpOd3nxTXIT-0qJbLhSLP4eJt2hcKYZ9wV23TE5RaLdI60lcC8Nke75vqMIRayp2nKYFA8zaO67t0uXsvBii-Cw4/w640-h320/Screen+Shot+2020-10-25+at+7.39.18+AM.png" width="640" /></a></div><br /><p><br /></p>Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-73367900304727428732020-10-23T07:06:00.003-07:002020-10-23T07:08:29.542-07:00My latest activation videos<p><br /></p><div class="separator" style="clear: both; text-align: center;"><iframe allowfullscreen="" class="BLOG_video_class" height="266" src="https://www.youtube.com/embed/HwVib5dkxzU" width="320" youtube-src-id="HwVib5dkxzU"></iframe></div><br /><div class="separator" style="clear: both; text-align: center;"><iframe allowfullscreen="" class="BLOG_video_class" height="266" src="https://www.youtube.com/embed/mkYHiD2Ov6U" width="320" youtube-src-id="mkYHiD2Ov6U"></iframe></div><br /><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: center;"><br /></div><br /><p></p>Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-90162311938460449962020-10-23T07:00:00.000-07:002020-10-23T07:00:17.281-07:00My new backpacking set-up for SOTA Activations<p> For backpacking where minimalism is important to me, my go to radio is the LNR MTR3B Mountain Topper. The radio itself weighs 174 grams. WG0AT has repackaged his into a clear lid tin that only weighs 120g. With the battery and the key made GM0EUL, the whole set up weighs less than a pound.</p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgR3GSS8qjB4YrrQ44EZulfvJyYqDdcxpRuXreM2cYiI75FRksw8pcbjlaWg_INvXDKCYEOQbS6SfeyXj06tlFI2FXZomsU6JH4LexCwkRfO1eW4AWwzfPklQOYLfvWtalLFUWplNGN_iU/s2048/oFDdaK77RmCKcfO%2525Fiswyg.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgR3GSS8qjB4YrrQ44EZulfvJyYqDdcxpRuXreM2cYiI75FRksw8pcbjlaWg_INvXDKCYEOQbS6SfeyXj06tlFI2FXZomsU6JH4LexCwkRfO1eW4AWwzfPklQOYLfvWtalLFUWplNGN_iU/s320/oFDdaK77RmCKcfO%2525Fiswyg.jpg" /></a></div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: center;">I used a small camera case which has the earbud.</div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh3OHnbjLJ7HTGwlQyG6c76LNf5M3DcxAgUB1L297g31SxaVq6TsoDAsSD2xYNIiY8XrJIBMwbb-0ENNGUM29QR3IEfI4WE_uFDICJ-hHmRPomQll2vaA-24KOEi_23h4ZNYAXes072tXo/s2048/N15wJW0gS%2525%252BK%2525CspKeUu8A.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh3OHnbjLJ7HTGwlQyG6c76LNf5M3DcxAgUB1L297g31SxaVq6TsoDAsSD2xYNIiY8XrJIBMwbb-0ENNGUM29QR3IEfI4WE_uFDICJ-hHmRPomQll2vaA-24KOEi_23h4ZNYAXes072tXo/s320/N15wJW0gS%2525%252BK%2525CspKeUu8A.jpg" /></a></div><div class="separator" style="clear: both; text-align: left;">For an antenna, I use a 40-30-20 link dipole. There is a separable link for 30m. Separating this link makes it an EFHW on 30m. With the link connected - it is a full wave on 20m and a half wave on 40m. The winder is a home made UHMW PE plastic. The line is spearfishing line and the wire is from SOTABeams. The weight includes the weight of the line thrower. </div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiJCe8sdb0bHlYJEl8p-9flxdMqHxpifIpL6Ye18UeOaA8XZrZke-xN8LO1Gl9AbhFJnBWkEP6pBPbtk9JE8R0G0zvkcgiO4LPDxpV6taVmV90YEGDBqCOTOsBeCIc8vSG2los9JDi7Ds0/s2048/1v1RvzpeRS%252BHL8C%2525hA4P7w.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiJCe8sdb0bHlYJEl8p-9flxdMqHxpifIpL6Ye18UeOaA8XZrZke-xN8LO1Gl9AbhFJnBWkEP6pBPbtk9JE8R0G0zvkcgiO4LPDxpV6taVmV90YEGDBqCOTOsBeCIc8vSG2los9JDi7Ds0/s320/1v1RvzpeRS%252BHL8C%2525hA4P7w.jpg" /></a></div><div class="separator" style="clear: both; text-align: center;"><br /></div><div class="separator" style="clear: both; text-align: left;">The entire set-up including antenna, radio, etc weighs about 1.5 pounds including the waterproof dry bag from Sea-to-Summit.<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg4mISXerv79tVHH2mot4F0Or6LgeXuEAuGmNgshVi88f6KWJyLSp9Me_PNaFGRHOI-ScxggjKLnpV6RfAgAc3a5KSXTEUr2NNZPEXsWJX144oo-k0rhdPX_P0oBOiUFWYCixJVI-ejXtY/s2048/otoO0eqeSnSFNFqpfef3Zw.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg4mISXerv79tVHH2mot4F0Or6LgeXuEAuGmNgshVi88f6KWJyLSp9Me_PNaFGRHOI-ScxggjKLnpV6RfAgAc3a5KSXTEUr2NNZPEXsWJX144oo-k0rhdPX_P0oBOiUFWYCixJVI-ejXtY/s320/otoO0eqeSnSFNFqpfef3Zw.jpg" /></a></div><br /></div><br /><div class="separator" style="clear: both; text-align: center;"><br /></div><br /><p></p>Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-42493050151110759762019-12-22T01:36:00.001-08:002019-12-23T06:50:19.515-08:00Worked a new ATNO #314 - 4U1UN - Remotely from a Hospital - 5 Watts QRPMy Dad had a stroke and so I was doing duty in the hospital (Saint Francis Downtown) and 4U1UN had been on the air. I have the ability to remotely control my home station via my phone. I was first alerted that 4U1UN was on the air on 40m CW by HamAlert and my phone by Morse indicated it was an RBN spot. I quickly dialed into my home station via the browser on my phone. I listened to 4U1UN work European stations for about an hour or so. He was calling CQ with the EU at the end of the CQ string. My finger was ready to pounce on the call button the whole time waiting for the CQ string to stop sending EU at the end. I had the split frequency all ready to go on the TX. I was going to transmit exactly 1 kiloHertz up from his TX frequency.AT 2358 UTC on December 8, 2019, he stopped sending the EU string at the end of the CQ. He was still loud - a solid 599. Then I pounced - NY4G. He replied back NY4G 599. I replied TU 599. It took about 3 calls and I was in the log. I later confirmed it through his online log several days later. It was later confirmed in LOTW for #313. (Actually #314 but Revillagigedo never confirmed via Card or LOTW despite being confirmed in his online log)Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-89067262988807392392019-10-26T12:45:00.001-07:002019-10-26T12:45:37.411-07:00New Book on Summits On the Air ActivatingNow available on Amazon:<br />
<div style="background-color: white; color: #1d2228; font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;">
<br /></div>
<div style="background-color: white; color: #1d2228; font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;">
<a href="https://www.amazon.com/100-Unique-Summit-Challenge-documentary-ebook/dp/B07YZM4S3Y/ref=sr_1_1?keywords=100+unique+summit+challenge&qid=1570880985&sr=8-1" target="_blank">The 100 Unique Summit Challenge - eBook </a></div>
<div style="background-color: white; color: #1d2228; font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;">
<br /></div>
<div style="background-color: white; color: #1d2228; font-family: Calibri, Helvetica, sans-serif; font-size: 12pt;">
<a href="https://www.amazon.com/dp/1091303665/ref=sr_1_2?keywords=100+unique+summit+challenge&qid=1570881473&sr" target="_blank">The 100 Unique Summits Challenge - Paperback</a></div>
Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-59505878764849431842019-09-01T17:46:00.001-07:002019-09-01T18:01:53.856-07:00101 Summit Activations CompletedMy blog posts to document the march up to the 1000 point goal is woefully out of date. If you want to see the detailed blow by blow for every activation - you will have to purchase my book due to be out in October 2019. <br />
<br />
I finally got my Mountain Goat designation after my 97th summit activation of Mount Sterling on July 16, 2019.<br />
<br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh-Vl2tKQKaToqQgKb0Fp-mx5tw-rGWl_Ge9zFdCHitZU41a9uBdktKwCHc8cJTNWbnxyDqgki5TCYX-e24_S2INcfA-eFyj7qmMS9haF_4ets6bBHI4XImp6ZHHVOKzrh7ZqIn8HxVzCg/s1600/MG_Cert.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="955" data-original-width="1280" height="297" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh-Vl2tKQKaToqQgKb0Fp-mx5tw-rGWl_Ge9zFdCHitZU41a9uBdktKwCHc8cJTNWbnxyDqgki5TCYX-e24_S2INcfA-eFyj7qmMS9haF_4ets6bBHI4XImp6ZHHVOKzrh7ZqIn8HxVzCg/s400/MG_Cert.jpg" width="400" /></a></div>
<br />
<br />
In the process i was able to establish the following:<br />
<br />
Fastest ever to Mountain Goat (1000+ points) in North America. The previous mark was held by NA6MG which was over a period of 9.8 months. The mark I set was 8.9 months.<br />
<br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhyWRInBwRlaG589MZmqD2xnP3VEDiofcaMQ7Pt8jQGWXNhdxUqm67RSQvG9XAG4zPIYS3Xc5hFtZw7JU6T4Fm5GAcCQ6vfNG_PQpDCdz-fzUGHnUMr20iS6NvgpDdEn6bNWDUNyy_6O4c/s1600/FastestMG_NA.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="286" data-original-width="443" height="412" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhyWRInBwRlaG589MZmqD2xnP3VEDiofcaMQ7Pt8jQGWXNhdxUqm67RSQvG9XAG4zPIYS3Xc5hFtZw7JU6T4Fm5GAcCQ6vfNG_PQpDCdz-fzUGHnUMr20iS6NvgpDdEn6bNWDUNyy_6O4c/s640/FastestMG_NA.JPG" width="640" /></a></div>
<div class="separator" style="clear: both; text-align: center;">
<br /></div>
<div class="separator" style="clear: both; text-align: left;">
I was also the 6th fastest to MG ever in the SOTA record books</div>
<div class="separator" style="clear: both; text-align: left;">
<br /></div>
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhbE04VffRteaWtNBZJmYkuOwp2HctMpPv87aedCf3mTfZG2uKO-9OmM36TLFJP8hSH4sH5lAXcbGgt7PUymUI1oWZxFNeOeEcahjbV_b2eMgie4lRva27tWRBftNO4tESldEjfNP6Iozw/s1600/FastestMG_SOTA.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="433" data-original-width="434" height="635" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhbE04VffRteaWtNBZJmYkuOwp2HctMpPv87aedCf3mTfZG2uKO-9OmM36TLFJP8hSH4sH5lAXcbGgt7PUymUI1oWZxFNeOeEcahjbV_b2eMgie4lRva27tWRBftNO4tESldEjfNP6Iozw/s640/FastestMG_SOTA.JPG" width="640" /></a></div>
<div class="separator" style="clear: both; text-align: center;">
<br /></div>
<div class="separator" style="clear: both; text-align: left;">
In terms of number of summits to achieve Mountain Goat - I was able to be among the top 5 fewest summits to achieve it and the only person to have 100 summits or less in less than a year.</div>
<div class="separator" style="clear: both; text-align: left;">
<br /></div>
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgQgVaglgk2m6Z71SfClpBaVq8Ma3Y_KuRsA_tuTatFmtbGbnP7khnG1993iqHSp0tDVnKYatxyV_zuZtexiWqzX0ENiQwZ34PRFFoQpX3SXDUWct7yWJluakrrZcB13Q_Ayh-QOK1bYH0/s1600/Fewest_Summits_to_MG.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="467" data-original-width="550" height="540" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgQgVaglgk2m6Z71SfClpBaVq8Ma3Y_KuRsA_tuTatFmtbGbnP7khnG1993iqHSp0tDVnKYatxyV_zuZtexiWqzX0ENiQwZ34PRFFoQpX3SXDUWct7yWJluakrrZcB13Q_Ayh-QOK1bYH0/s640/Fewest_Summits_to_MG.JPG" width="640" /></a></div>
<div class="separator" style="clear: both; text-align: left;">
<br /></div>
<div class="separator" style="clear: both; text-align: left;">
<br /></div>
<div class="separator" style="clear: both; text-align: center;">
<br /></div>
<br />Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-60549330661524924892019-05-16T17:30:00.000-07:002019-05-16T17:30:00.479-07:00Head to Head Test - Center Fed Link Dipole Versus EFHW on 20mThe jury is in. The same QTH, the same time, the same configuration (inverted Vee), same height above ground at the apex. There is no significant edge for the link dipole in performance. The EFHW wins on convenience, ease of deployment, weight (EFHW 160 grams, Link Dipole is 200 grams).<br />
<br />
Link Dipole is a Home Brew<br />
<br />
EFHW is an LNR 40-20-10<br />
<br />
Power : 200 mW<br />
<br />
Mode: WSPR<br />
<br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjbwk6Rbpumq6X-83DgdwibO1cp1MyfWJ3gCRusugKcoIxvbaj0wrV5aonUUGBa5ganRHFAZhWOmblSiFrUTq3EsAZ1_enOiii3sKmH2rBIFa5BA9i-4a8INo50xO3TfCf8TfxAMEFHLSY/s1600/EFHW_Vs_CF_Link_Dipole.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="616" data-original-width="1324" height="294" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjbwk6Rbpumq6X-83DgdwibO1cp1MyfWJ3gCRusugKcoIxvbaj0wrV5aonUUGBa5ganRHFAZhWOmblSiFrUTq3EsAZ1_enOiii3sKmH2rBIFa5BA9i-4a8INo50xO3TfCf8TfxAMEFHLSY/s640/EFHW_Vs_CF_Link_Dipole.JPG" width="640" /></a></div>
<br />Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-68515172788112726512019-04-28T05:39:00.002-07:002019-04-28T05:39:14.073-07:00Week 28 – Clingmans Dome (#58) and Nettle Creek Bald (#59)It was April 22, 2019, the day after Easter Sunday. My hiking companion was Dave KE4EA. The second visit to Clingman’s Dome has long been anticipated since the last time in late fall had really cold sub-freezing conditions. Monday promised to be a nice sunny spring day after a weekend of severe weather into Easter weekend. Nettle Creek Bald was the double-header which was conveniently located on US 441 on the way back home.<br />
<br />
We left Travelers Rest at 7:00 AM and arrived at Clingman’s Dome at about 9:30 AM and the temperature was around 43 degrees F. There was snow in the grassy areas. It was a bright, clear, spring day. The views did not disappoint. Tourists abounded on this beautiful day.<br />
<div>
<br /></div>
<div>
Dave and I set up in a wooded area next to the observation tower. I made some DX contacts on 20m – Finland OH9XX and Sweden SA4BLM on top of the usual chasers. I also made a summit to summit contact with K9OZ who was on Winding Stair Mountain W5O/OU-002.</div>
<div>
<br /></div>
<div>
<div>
The Appalachian Trail goes through Clingman’s Dome and we found a couple of young hikers thru-hiking the entire 2200 mile trail – Dani and Justin. I explained to them what I was doing and they were intrigued by the idea. I also told them that I was writing a book and taking pictures of thru-hikers of the AT that I meet. Since I was next to the paved ramp to the observation tower, I had plenty of people ask me what I was doing. With earbuds on, no one could here the dits and dahs of the Morse Code I was sending.</div>
<div>
<br /></div>
<div>
Before leaving, we had to trek up the ice covered paved path to the observation tower. We had to grab the hand rails and looked for patches to step on with enough footing not to fall. At the top the views were fantastic.</div>
</div>
<div>
<br /></div>
<div>
<div>
Soon we made our way to the truck to head on to the Thomas Divide Trail just off NC441 and only a few miles away. The next summit to climb was Nettle Creek Bald which was about halfway to Newton Bald – on the same trail.</div>
<div>
<br /></div>
<div>
Nettle Creek Bald hike to the summit was a 3.83 km hike (approximately 2.5 miles), and we could see the summit from the trail. Another interesting view is that we could also see where we came from. From behind the trees we saw the summit of Clingman’s Dome. The hike was up and down, not very steep. The trail itself was well maintained.</div>
</div>
<div>
<br /></div>
<div>
Reaching the summit itself was sort of anti-climactic – no summit marker, just the end of the track on my GPS device and visually everything sort of fell away - from the ridge side and from the trail side. The ridge was very steep on either side. I was able to make another summit to summit contact – this time with NU7A who was 3500 Camas Mountain W7W/CH-228 in Washington State. I got chased by EA2LU Jorge from Spain along with the usual chasers who always seem to appear in my logs Paula K9IR, Larry K0RS, Bruce W2SE, Dean K2JB and George KX0R.</div>
<div>
<br /></div>
<div>
<div>
Dave and I swept through the bands. Dave usually has the responsibility of 40m while I swept 20m, 30m and 60m. Soon it was time to go home. It had been a good day. </div>
<div>
<br /></div>
<div>
Dave continued up the ladder in W4C, after having completed 16 summits, he was now at 151 summit points. I was now at 633 summit points towards the 1000 point goal. I was still #4 in the standings for 2019 with W1PTS still #1 on the leaderboard with 696 points, followed by KN4LRI at 623 points, KS4FX at 558, and me at 500 points with an 11.11 points per activation average. W1PTS had just become a Mountain Goat when his previous year’s total was added to his 2019 total. At the time of this writing, during Week 28, W1PTS was at 1079 points. I was still at #11 in the all-time W4C standings.</div>
</div>
<div>
<br /></div>
<div>
<br /></div>
<div>
<br /></div>
Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-66338535559334192502019-04-28T05:36:00.001-07:002019-04-28T05:36:04.133-07:00Week 27 – No Activations Because of Severe Weather I spent the early part of the week vacationing with my wife and parents in Kentucky. I had planned on doing Big Butt W4C/CM-009 with Dean K2JB. The weather forecast indicated intense storms through Friday with a 50% chance of rain in the Carolina Mountains. I thought about postponing the activation – but as of April 18, the front has been shifting enough to predict improving weather conditions for the 20th. I was hopeful that weather improves enough as a Trans-Atlantic Summit-to-Summit event has been planned for that day by the boys across the pond and more alerts have been posted. <br />
<br />
Dean K2JB sent me an email stating that he could not accompany me on the hike to Big Butt as his wife sustained an injury to her knee and would have an MRI on Saturday. As of April 19, I deleted my alert. Doing an alternate summit that is a drive up – such as Sassafras Mtn would have given away summit points that I otherwise could have had. So as it stands, there would be no activations during week 27.Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-51364239236779004652019-04-28T05:34:00.002-07:002019-04-28T05:34:45.287-07:00Week 26 – Doubletop Mountain (#56) and Snaggy Bald (#57)It was April 10, 2019. Both mountains shared the same starting point which was on gated Forest Service Road 4652 (seasonally accessible between March 15th and December 31). It started out as a 1 kilometer hike to the summit of Snaggy Bald which is a bush whack of the ridgeline. There was no trail per se, although there was a logging road which hugged the ridgeline for a little while. The hardwoods were still leafless at this high elevation which was desirable – as a bush whack with heavy foliage is that much more difficult. Scott set up on the summit and I setup just below him on the AZ. The hike was steep – climbing 140 meters in a kilometer. <br />
<br />
Patrick KI4SVM was going to Mt. Hardy W4C/WM-006 and he kept tabs on our progress – wanting to make an S2S contact with us. I did make contact with Pat from both summits – once with CW and the other on the 2m HT, and so did Scott. We then descended Snaggy Bald and made a right turn as we picked up the ridge towards Doubletop. It was a steep decent on the ridgeline to the gap between the two mountains. We ascended to several false peaks before reaching Doubletop Mountain. About 200m from the summit of Doubletop stood a 7 foot high boulder which covered the entire width of the ridge. We had two options – go around the boulder by descending the ridge or go over it “free solo”. The ridge was very steep and going around it did not seem like a good idea. I was the one that found the boulder and I thought going over the top was the better choice. <br />
<br />
Scott and I both safely made it over. We then ascended to the penultimate false peak – we called Doubletop Junior. After Doubletop Junior, the summit of Doubletop was still a distant 200m away. We were still faced with a steep 60m vertical rise over the remaining 200m. After we were sure we were within the AZ, Scott proceeded to the summit. I setup my station just below Scott in the AZ<br />
<br />
Scott set up using the observation tower as a support for his vertical. I tried to call Scott but apparently his HT had died. Scott tried to text me to tell me about the wonderful views to be had on the summit observation tower. I was disappointed that I missed the opportunity – only a few meters away.<br />
<br />
I set up my station by lashing my mast to a convenient tree. The difficulty came in getting the antenna trap stuck in a tree limb. Scott’s pole came to the rescue as he pulled down the tree limb with it to untangle the wire. With station set up wrapped up and contacts made, now the chore of hiking down was before us.<br />
<br />
<div>
Scott and I discussed that we still had a long hike back to the car. It had already taken 3 hours to hike the 4 km from Snaggy Bald and it was about 3:30 PM when we reached the summit of Doubletop. I stopped and started packing up at about 4:30 PM. Scott shared that the view was fantastic from the fire tower and we took a quick glance at the panorama video he had taken.</div>
<div>
One of the mistakes we made in going up to Doubletop is not maintaining the ridge line and we paid for it by the steep bush whack to regain the ridge. We resolved to maintain the ridge line coming down.</div>
<div>
<br /></div>
<div>
<div>
The descent went according to plan. We maintained the ridge track and made it back to the logging road. We followed that logging road all the way back to the truck. It was almost 7:30 as were underway back to Asheville.</div>
<div>
<br /></div>
<div>
We counted all the ups and downs and by my reckoning, we had ascended a total 750 meters (2453 feet) all in about 8 kilometers (5 miles).</div>
<div>
That was an epic hike, Scott and I both were hurting at the end of the day – with Scott clearly the fitter one.</div>
</div>
<div>
<br /></div>
<div>
<br /></div>
Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-70254467583537564542019-04-28T05:30:00.001-07:002019-04-28T05:30:33.406-07:00Week 25 Part 2 – Craggy Dome (#55)It was April 3, 2019. It had been in the 60’s and foliage was exploding in the lower valleys. One more week and the same would happen in the high mountains. This was the last week to climb up the scraggly summit of Craggy Dome W4C/CM-007. I was at the house of son in Greer overseeing some electrical contractors re-wiring a bathroom. I had a planned meeting with Scott in Asheville at 12:30. I was waiting for the electrician to complete his work and it was almost time to go meet Scott. It was still an hour fifteen drive to meet Scott. Electrician said to me, “Why don’t you go? Instruct me on how to lock up and leave the key in the lock box”. I thought to myself “My wife will have a conniption if I leave the keys but I can’t leave Scott hanging, nor can I postpone this hike, last chance to hike Craggy”. I relented and left the electrician to call me after he locks up.<br />
<br />
Soon I was at the Veterans Restoration Quarters where Scott and his wife volunteer to serve meals to veterans rehabilitating from PTSD, depression and other ailments. I had a meal with the church volunteers of stuffed potato and cole slaw.<br />
<br />
Soon, Scott and I were up on the Parkway headed for Craggy Dome. Arriving at the overlook where the hike starts, I saw Craggy Dome, a gnarly mess of a mountain full of thick undergrowth and rhododendrons in between the hardwoods. Within it is a faint manway of a trail probably created by rain water all the way up to the summit.<br />
<br />
Scott leading the way, we started hiking on the Mountains to Sea Trail and quickly made a beeline to the left toward the spine of the ridge. It was shallow at first. We were only about 600 meters or so to the summit as the crow flies. It was about a 1 km hike. The second half was fairly steep<br />
<div>
<br /></div>
<div>
<div>
There were no tall trees on the summit. There was an abundance of heavy brush. I had my 20 foot mast and fastening it to the trekking pole which was guyed to the shrubs was fairly easy to do. I was on a rock outcrop where I sat with my radio. Scott and I split the bands with him starting on 60m and me on 20m. I had three S2S’s today - with George KX0R on Genesee Mountain W0C/FR194 in Colorado, K9IR Paula on W0M/ES-001 on Webster HP in Amish country near Springfield Missouri and Tom WX4TW on Mt. Mitchell W4C/CM-001. Scott made contacts with the same summits as I. </div>
<div>
On a summit, it is an amazingly quiet place with signals sounding loud even without tickling the strength s-meter on the radio.</div>
</div>
<div>
<br /></div>
<div>
Scott and I headed down the small manway of a trail – and soon we were on the Parkway bidding each other farewell.</div>
Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0tag:blogger.com,1999:blog-78631592986746911.post-62308752779998753872019-04-28T05:27:00.000-07:002019-04-28T05:27:18.904-07:00Week 25 – Part 1 – Bunches Bald (#54)It was April 2nd. Several have just activated Bunches Bald W4C/WM-013, and among them K2JB on March 30, and Tom W1PTS on March 31, to get the last winter bonus points. I followed Dean’s directions to the letter. I entered from the Blue Ridge Parkway at the entrance near Big Witch Gap and drove the 3 miles to the campsites near the summit. Dean pointed out that behind campsite T4, there is a faint trail that leads to the summit. I got to campsite T4 and found that the site itself, although very nice for setting up a station, is below the AZ by a couple of meters. As soon as I jumped onto the trail, I was in the AZ. A walked another 30m and with that steep trail, I was well into the AZ.<br />
<br />
Setting up a radio station was tight but very doable. Soon I was on the air. Propagation was not good as I was getting a lot of weak signal reports. I could not hear any other summit activators – although folks were calling on K9PM. I made about 20 contacts with chasers on 4 bands. Soon I was packing up to go home. On the way down, I found an alternate approach without bringing the vehicle into the campground. It would involve a 1 km hike with 200m of elevation gain which is very doable. There was a large grassy clearing on the shoulder of the Blue Ridge Parkway past the Lickstone Overlook if one is coming from Soco at coordinates N35 degrees 31.114 minutes and W83 degrees 11.698 minutes which will bring you to within 40m of the dirt road. One would just walk over the 40m from the grassy area to the dirt road and hike the rest of the way.<br />
<br />
While planning the logistics for activating Bunches Bald and setting up my alert on the SOTA reflector, I found several alerts for Tom W1PTS. It appeared he was planning activations on April 3 and April 4 which will get him to within 2 points of becoming a Mountain Goat. Stay tuned to see how this played out. The projection was that Tom would just miss setting the North American record for the shortest time to become a Mountain Goat – in the neighborhood of 10.9 months. The NA record is still held by WA7JTM of 10.75 months established in February 2014. There I was at week 25 with 585 points – 27 weeks to go, and 415 points to 1000.Ariel Jacalahttp://www.blogger.com/profile/07420677267107227437noreply@blogger.com0