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</p> Signup and view all the answers

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

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

    What is the default maritime channel for modulation F1D?

    <p>8001</p> Signup and view all the answers

    Which modulation modes support the signal squelch feature?

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

    What happens when the operator presses the erase key?

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

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

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

    What happens when the squelch function is activated?

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

    Why does the transmitter superimpose the signal tone frequency?

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

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

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

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