Friday, November 19, 2010

Extra Class Question Review - November 20, 2010

E1A Operating Standards: frequency privileges for Extra Class amateurs; emission standards; automatic message forwarding; frequency sharing; FCC license actions; stations aboard ships or aircraft

E1A01 (D) [97.301, 97.305]
When using a transceiver that displays the carrier frequency of phone signals, which of the following displayed frequencies will result in a normal USB emission being within the band?
A. The exact upper band edge
B. 300 Hz below the upper band edge
C. 1 kHz below the upper band edge
D. 3 kHz below the upper band edge

ANSWER: When using a transceiver that displays the carrier frequency of phone signals, a displayed frequency of 3 kHz below the upper band edge will result in a normal USB emission being within the band. Note - The inner edge of the side band is 300 Hz away from the center carrier frequency and the outer edgel 2.8 kHz away - thus a center carrier 3 kHZ away will be totally be within the band with 0.2 kHz to spare.

~~

E1A02 (D) [97.301, 97.305]
When using a transceiver that displays the carrier frequency of phone signals, which of the following displayed frequencies will result in a normal LSB emission being within the band?
A. The exact lower band edge
B. 300 Hz above the lower band edge
C. 1 kHz above the lower band edge
D. 3 kHz above the lower band edge
~~

ANSWER:

E1A02
When using a transceiver that displays the carrier frequency of phone signals, a displayed frequency 3 kHz above the lower band edge carrier frequency display will result in a normal LSB emission being within the band. See above.


E1A03 (C) [97.301, 97.305]
With your transceiver displaying the carrier frequency of phone signals, you hear a DX station's CQ on 14.349 MHz USB. Is it legal to return the call using upper sideband on the same frequency?
A. Yes, because the DX station initiated the contact
B. Yes, because the displayed frequency is within the 20 meter band
C. No, my sidebands will extend beyond the band edge
D. No, USA stations are not permitted to use phone emissions above 14.340 MHz
~~

ANSWER:

It is not legal to return the call using upper sideband on the same frequency because your sidebands will extend beyond the band edge.
14.349 MHz + 3 KHz = 14.352 MHz.

The band edge for 20 meters is 14.350 MHz therefore your signal would be out of band by 2 KHz


E1A04 (C) [97.301, 97.305]
With your transceiver displaying the carrier frequency of phone signals, you hear a DX station's CQ on 3.601 MHz LSB. Is it legal to return the call using lower sideband on the same frequency?
A. Yes, because the DX station initiated the contact
B. Yes, because the displayed frequency is within the 75 meter phone band segment
C. No, my sidebands will extend beyond the edge of the phone band segment
D. No, USA stations are not permitted to use phone emissions below 3.610 MHz
~~

ANSWER:

With your transceiver displaying the carrier frequency of phone signals, you hear a DX station's CQ on 3.601 MHz LSB. It is not legal to return the call using lower sideband on the same frequency because your sidebands will extend beyond the edge of the phone band segment.
3.601 MHz - 3 KHz = 3.598 MHz

The band edge for phone on 80 meters is 3.600 MHz; therefore your signal at 3.598 MHz would be out of the band by 2 KHz and in the RTTY and data segment of the 80 meter band


E1A05 (C) [97.305]
Which is the only amateur band that does not permit the transmission of phone or image emissions?
A. 160 meters
B. 60 meters
C. 30 meters
D. 17 meters
~~

The 30 meter band is restricted to RTTY and data transmission only.


E1A06 (B) [97.303]
What is the maximum power output permitted on the 60 meter band?
A. 50 watts PEP effective radiated power relative to an isotropic radiator
B. 50 watts PEP effective radiated power relative to a dipole
C. 100 watts PEP effective radiated power relative to an isotropic radiator
D. 100 watts PEP effective radiated power relative to a dipole
~~

You must do a calculation of transmitter power, antenna gain and line loss to determine your ERP. On the 60 meter band power is limited to 50 Watts ERP, (Effective Radiated Power) referred to a dipole antenna which includes antenna gain and the path loss or gain from the transceiver to antenna itself. If you had an antenna with +6 dB of gain over a dipole and a coaxial line loss of -3dB the maximum output allowed from the transmitter
would be 25 watts. Gain over dipole would be 6 dB -3dB Loss or 3db, therefore you would have to have a transmitter power of 3 db less than 50 watts, or 25 watts transmitter output power.

E1A07 (D) [97.303]
What is the only amateur band where transmission on specific channels rather than a range of frequencies is permitted?
A. 12 meter band
B. 17 meter band
C. 30 meter band
D. 60 meter band
~~
The 60 meter band is the only amateur band where transmissions on specific channels rather than a range of frequencies is permitted.

E1A08 (C) [97.303]
What is the only emission type permitted to be transmitted on the 60 meter band by an amateur station?
A. CW
B. RTTY Frequency shift keying
C. Single sideband, upper sideband only
D. Single sideband, lower sideband only

Upper sideband SSB is the only emission permitted to be transmitted on the 60 meter band by an amateur station.
~~

E1A09 (A) [97.301]
Which frequency bands contain at least one segment authorized only to control operators holding an Amateur Extra Class operator license?
A. 80/75, 40, 20 and 15 meters
B. 80/75, 40, 20, and 10 meters
C. 80/75, 40, 30 and 10 meters
D. 160, 80/75, 40 and 20 meters
~~
The 80/75, 40, 20 and 15 meter frequency bands contain at least one segment authorized only to control operators
holding an Amateur Extra Class operator license.


E1A10 (B) [97.219]
If a station in a message forwarding system inadvertently forwards a message that is in violation of FCC rules, who is primarily accountable for the rules violation?
A. The control operator of the packet bulletin board station
B. The control operator of the originating station
C. The control operators of all the stations in the system
D. The control operators of all the stations in the system not authenticating the source from which they accept communications

If a station in a message forwarding system inadvertently forwards a message that is in violation of FCC rules, the control operator of the originating station is primarily accountable for the rules violation.

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