TTI TCB-660, Service Manual

Page: 19 / 43

TCB- 66 0 Circuit Description Page 1 6
T TI 200 7 -0 2 -2 3
4 FM Deviation Adj.
Channel & Frequency :
19CH, 27.185MHz
MIC : Transmit
Function : FM Mode
CB/ANL Off/DX
Volume : Optional
Squelch : Optional
RF Gain : Optional
MIC Gain : Max
Connection the audio
generator (set to 1 KHz)to the
microphone.
Connect the modulation meter
through the RF attenuator to
the ANT Connector. Adjust
the audio signal level to obtain
by 1KHz deviation.
When you increase the audio
signal by 20 dB, the deviation
should not exceed 2.0KHz
deviation(Figure 3). RV401 1.8KHz ~
2.0KHz
Figure 2
Figure 3