Audio Level Adjustments and Microphone Input Range

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Questions and Answers

What is the nominal Audio Bus level after the FPGA adjustment?

  • +10 dBm
  • -10 dBm
  • -8 dBm (correct)
  • +8 dBm

What is the microphone level range provided by a dynamic microphone?

  • 0.3 to 10 V
  • 3 to 100 mV (correct)
  • 3 to 10 V
  • 0.3 to 100 mV

How is the side tone controlled in Transmit mode?

  • Automatically adjusted based on ambient noise
  • Through the volume control (correct)
  • Manually adjusted by opening/closing a circuit
  • By a separate physical dial

What happens to the speakers when the 'jack output' is in use?

<p>Both speakers are off (A)</p> Signup and view all the answers

What is the maximum power output of the external speaker at the rear connector?

<p>3 W (D)</p> Signup and view all the answers

How is the level range of the dynamic microphone compressed before reaching the compressor?

<p>-20 dB range (D)</p> Signup and view all the answers

What does the RSSI squelch do to the audio output?

<p>Mutes it for reception levels below a threshold (D)</p> Signup and view all the answers

What is the default maritime channel for modulation F1D?

<p>8001 (D)</p> Signup and view all the answers

Which modulation modes support the signal squelch feature?

<p>F3E, A3E, H3E and R3E (D)</p> Signup and view all the answers

What is the purpose of the automatic process related to the AGC function?

<p>To control preamplifier gain based on received signal strength (B)</p> Signup and view all the answers

What happens when the operator presses the erase key?

<p>All channels are erased except channel 101. (B)</p> Signup and view all the answers

Why are subtones within a network required to be set to identical values?

<p>To ensure clear communication and compatibility (C)</p> Signup and view all the answers

In the list of possible signal squelch subtone frequencies, what is the highest value?

<p>250 Hz (A)</p> Signup and view all the answers

What happens when the squelch function is activated?

<p>The squelch symbol changes from OFF (C)</p> Signup and view all the answers

What is the purpose of changing the RSSI squelch sensitivity softkey?

<p>To adjust the threshold for muting audio output (C)</p> Signup and view all the answers

What is the range of available subtone frequencies for signal squelch?

<p>67.0 Hz - 254.1 Hz (D)</p> Signup and view all the answers

Why does the transmitter superimpose the signal tone frequency?

<p>To distinguish signals from noise (C)</p> Signup and view all the answers

'SQL Tone' softkey is used for selecting what in the system?

<p>'Signal Squelch Subtone Frequency' (D)</p> Signup and view all the answers

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