Standard C828M - Adjustment of Microphone Sensitivity; Microphone Connector

9. Adjustment of Microphone Sensitivity
The microphone sensitivity is adjusted to best meet the purpose of mobile and
fi xed stations. However, any further adjustment of the sensitivity will be made
of the semifixed resistor R301 as shown in Fig. 9-1 below.
Alignment of mike sens.
R301 \i
Alignment of deviation
R311
1 o
Figure 9-1
10. Microphone Coiinector
Microphone connection will be made as indicated in the Figure below.
Figure 10-1
No. 1 Hot microphone terminal (common with AT-2)
No. 2 Grounding terminal (common with AT-1)
No. 3 Microphone push-button terminal (common with
AT-3)
No. 4 Audio Output terminal (common with AT-7)
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