Kenwood TM-V71A Service Manual page 89

Transmitter Section
250mVrms : K,M4
100mVrms : E
5mVrms : K,M4
2mVrms : E 67mVrms 320mVrms
2 1
MIC
AMP
12 11
IC802 DAC
MIC
1/2
1200bps
40mVp-p : 1200bps
2Vp-p : 9600bps
PKD
+5.5dBm : VHF
0dBm : UHF
+6.0dBm
Q7 Q644
+4.5dBm
Q161
Note1: Set the AG so that the microphone socket input is 3kHz deviation at 1kHz modulation.
The data communication connector input level is 3kHz deviation at 1kHz modulation for 1200bps
and 2kHz deviation at 1kHz modulation for 9600bps.
Note2: The transmit frequency is 145.0 or 435.0MHz.
Note3: The HI/MID/LOW switch is set to HI.
Note4: The measurements with the power meter, except for the ANT connector, are the values with
the APC off.
LEVEL DIAGRAM
320mVrms 950mVrms 950mVrms 950mVrms
6 7 9 19
ALC
AMP
IC806
IC802
cross
1/2
point
SW
10
PKD
AMP
13 14
IC805
1/4 320mVrms
9600bps
Center Frequency
+14.0dBm +16.5dBm
IC131
VHF
POWER AMP
Q131
+14.5dBm +16.5dBm
IC161
UHF
POWER AMP
Q162
AF (1kHz)
2 1 6
PRE
MOD
AMP
AMP
2
IC803 SPL Filter
1/2
IC803
2/2
50W : K,E
23W : M4
LPF
LPF HPF
TM-V71A/V71E
670mVrms : VHF
550mVrms : UHF
330mVrms : VHF
220mVrms : UHF
7 9 10 4 3 4
IC804 IC804
E VR E VR
Vc
ANT
VCO A
X1
TCXO
(A)
89