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5-3
5
RECEIVE AND TRANSMIT
SSB/AM/FM modes
VOX function
The VOX (Voice-Operated Transmission) function
switches between transmit and receive with your voice.
This function provides hands-free operation.
Push [VOX/BK-IN] to turn the VOX function ON or
➥
OFF.
• “VOX” is displayed when the VOX function is ON.
Transmit monitor
The Monitor function allows you to monitor your trans-
mit signals.
Audio tone control
You can adjust the transmit voice characteristics (Bass
or Treble).
SSB mode
Speech compressor
The speech compressor increases average RF output
power, improving signal strength and readability.
Push the Multi-function [COMP](
➥
) key to turn the
Speech compressor ON or OFF.
Transmit filter width
Hold down the Multi-function [COMP](
➥
) key for 1
second to select the compression bandwidth be-
tween Wide, Mid, and Narrow.
CW mode
Break-in function
The break-in function is used to automatically toggle
the transceiver between transmit and receive when
keying. The
IC-7850
is capable of full break-in or semi
break-in CW operation.
• Semi-break-in operation:
In the semi break-in mode, the transceiver transmits when
keying, then automatically returns to receive after a preset
time after you stop keying.
• Full break-in operation:
In the full break-in mode, the transceiver automatically
transmits while keying and returns to receive immediately
after you stop keying.
➥
Push [VOX/BK-IN] several times to select the break-
in OFF, semi break-in or full break-in.
• “BK IN” or “F-BK IN” is displayed when the Semi break-in
or Full break-in function is ON.
SSB data/CW/RTTY/PSK modes
1⁄4 function
When operating in the SSB data, CW, RTTY or PSK
mode, the 1⁄4 tuning function is selectable. When the
function is ON, the Dial speed is reduced to 1⁄4 of the
normal speed, for finer tuning control.
Push the Multi-function [1/4](
➥
) key to turn the 1⁄4
function ON or OFF.
• “
” is displayed when the function is ON.
CW/AM modes
Auto tuning function
Push [AUTO TUNE] to turn ON the Auto tuning func-
➥
tion.
• When the CW mode is selected:
The transceiver automatically tunes the desired signal with-
in a ±500 Hz range.
• When the AM mode is selected:
The transceiver automatically tunes the desired signal with-
in a ±5 kHz range.
IMPORTANT!
When receiving a weak signal, or receiving a signal with in-
terference, the Automatic tuning function may not tune, or
may tune to an undesired signal.
■
Convenient functions for Transmit
Convenient functions for Receive (Continued)
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