December 2020 Quiz:
Here are the answers to the December 2020 quiz:
- What is a CTCSS tone?
A) A special signal used for radio control of model craft
B) A special signal used for telemetry between amateur space stations and Earth stations
C) A sub-audible tone that activates a receiver audio output when present
D) A tone used by repeaters to mark the end of a transmission
- In a frequency modulation receiver, the __________ is in between the antenna and the mixer.
A) local oscillator
B) intermediate frequency amplifier
C) radio frequency amplifier
D) audio frequency amplifier
- Zener diodes are used as:
A) voltage regulators
B) AF detectors
C) current regulators
D) RF detectors
- The reciprocal of resistance is:
- Which region of the ionosphere is the least useful for long distance radio-wave propagation?
A) The D region
B) The E region
C) The F2 region
D) The F1 region