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15. Rodger Beep:
Activates the end of transmission, or roger beep, tone. When activated a 1 kHz tone will
automatically transmit upon release of PTT switch .This notifies contacts that your transmission
has ended and you are ready to receive their signal
16. Front Mounted Microphone input:
Microphone wiring is as follows: Pin 1 : Ground
17. Guard-Band Filter ©: (narrow/wide).I.F Filter an Switchable (narrow/standard) 6 pole I.F Filter
with buffer .in normal use the filter switch would be in the out position (standard receive
bandwidth) under bad band conditions or splatter from a couple of channels away from a over
powered station or close station this can be put in to the depressed position (narrow) to help
remove or suppress the offending signal.
18. NB-ANL SWITCH:
Noise Blanker and Automatic Noise Limiter. In the NB position, only the noise blanker is ON. In
the ANL position the automatic noise limiter are ON. The noise blanker circuit eliminates pulse
type interference usually associated with automotive ignition systems
.
19.DIM /OFF/BRITE: The 3 stage dimmer control allows you to select the proper
illumination level for both the S/RF meter and blue LED displays. In the OFF position disables the
frequency counter
Pin 2 : Microphone Audio
Pin 3 : Transmit
Pin 4 : Receive
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