2015-G4D: Speech processors; S meters; sideband operation near band edges
What is the purpose of a speech processor as used in a modern transceiver?
Increase the intelligibility of transmitted phone signals during poor conditions
Increase transmitter bass response for more natural sounding SSB signals
Prevent distortion of voice signals
Decrease high-frequency voice output to prevent out of band operation
Which of the following describes how a speech processor affects a transmitted single sideband phone signal?
It increases average power
It increases peak power
It reduces harmonic distortion
It reduces intermodulation distortion
Which of the following can be the result of an incorrectly adjusted speech processor?
All of these choices are correct
Excessive background pickup
What does an S meter measure?
Received signal strength
Transmitter power output
How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?
It is 100 times more powerful
It is 10 times less powerful
It is 20 times less powerful
It is 20 times more powerful
Where is an S meter found?
In a receiver
In an SWR bridge
In a transmitter
In a conductance bridge
How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?
Approximately 4 times
Approximately 1.5 times
Approximately 2 times
Approximately 8 times
What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?
7.175 to 7.178 MHz
7.178 to 7.181 MHz
7.178 to 7.184 MHz
7.1765 to 7.1795 MHz
What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?
14.347 to 14.350 MHz
14.347 to 14.647 MHz
14.344 to 14.347 MHz
14.3455 to 14.3485 MHz
How close to the lower edge of the 40-meter General Class phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?
At least 3 kHz above the edge of the segment
At least 3 kHz below the edge of the segment
Your displayed carrier frequency may be set at the edge of the segment
At least 1 kHz above the edge of the segment
How close to the upper edge of the 20-meter General Class band should your displayed carrier frequency be when using 3 kHz wide USB?
At least 3 kHz below the edge of the band
At least 3 kHz above the edge of the band
Your displayed carrier frequency may be set at the edge of the band
At least 1 kHz below the edge of the segment
● = Unseen
● = Weak
● = Review
● = Learned
● = Incorrect answer