Communications Radio User Manual

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17. S-RF/SWR SWITCH
This is a two-function switch. In the S-RF position, the meter will indicate the strength of the signal
being received, as well as the relative RF output of transmission. To use the meter to measure the
standing wave ratio, turn the switch to the SWR position. The SWR function is self-calibrating.
18. NB/ANL/OFF SWITCH
In the NB/ANL position, the RF Noise Blanker and the Automatic Noise Limiter in the audio circuits
are also activated. The Noise Blanker is very effective in eliminating repetitive impulse noise such as
ignition interference.
19. R.B./OFF SWITCH
In the Roger Beep position, the radio transmits an audio tone at the end of your transmission to indicate
that transmission has ended. As a courtesy to others, use the Roger Beep only when necessary.
20. +10KHz/OFF SWITCH
When the switch is pressed the frequency is shifted 10KHz up.
21. CHANNEL DISPLAY
The channel display indicates the current selected channel.
2.1.2 REAR PANEL
Figure 2-2 represents the location of the following connections: