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33
4
USING DIFFERENT OPERATING MODES
Band keys
[MIC GAIN]
[RF PWR]
Connect microphone here
[TRANSMIT]
[AM/FM]
ı
TRANSMITTING
Before transmitting, monitor your selected operating
frequency to make sure transmitting won’t cause inter-
ference to other stations on the same frequency.
➀
Connect a microphone to the [MIC] connector.
➁
Push a band key to select the desired band.
➂
Push [AM/FM] to select FM.
• Pushing [AM/FM] toggles between AM and FM.
➃
Rotate [AF] to set audio to a comfortable listening
level.
➄
Push [TRANSMIT] or push and hold [PTT] to trans-
mit, then speak into the microphone to transmit.
➅
Push [TRANSMIT] or release [PTT] to return to re-
ceive.
✔
Convenient functions for receive
q
Preamplifier and attenuator (p. 38)
The preamp amplifies received signals in the front end
circuit to improve the S/N ration and sensitivity. The at-
tenuator prevents a desired signal from distorting
when very strong signals are near the desired fre-
quency or when very strong electric fields, such as
from a broadcasting station, are near you.
w
Noise reduction (p. 39)
The noise reduction function reduces noise compo-
nents and picks out desired signals which are buried
in noise. The received AF signals are converted to dig-
ital signals and then the desired signals are separated
from the noise.
e
Auto notch filter (p. 40)
The auto notch function automatically attenuates more
than 3 beat tones, tuning signals, etc., even if they are
moving.
✔
Convenient functions for transmit
q
VOX (voice activated transmit) (p. 43)
The VOX function starts transmission without pushing
the transmit switch or PTT switch when you speak into
the microphone; then, automatically returns to receive
when you stop speaking.
w
Transmit quality monitor (p. 45)
This function allows you to monitor the quality of your
transmitted signal.
DSP
DSP
Summary of Contents for IC-746
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