Tait TM8235, Service Manual

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TM8100/TM8200 Service Manual Transmitter Fault Finding (40W/50W) 305
© Tait Electronics Limited June 2006
Table 11.8 RF voltages along the initial RF signal path of the VHF radio (B1 band)
Power
level (W) Frequency
(MHz)
RF voltages (V)
Synthesizer
output Exciter
stage 1 Exciter
stage 2 Exciter
stage 3 Driver
output
10 136
155
174 0.3 ± 0.1
0.3 ± 0.1
0.2 ± 0.1 0.6 ± 0.2
0.6 ± 0.2
0.7 ± 0.2 2.7 ± 0.5
2.2 ± 0.5
1.7 ± 0.5 4.0 ± 0.5
3.7 ± 0.5
4.0 ± 0.5 9.9 ± 0.5
8.4 ± 0.5
8.4 ± 0.5
15 136
155
174 0.3 ± 0.1
0.2 ± 0.1
0.2 ± 0.1 0.6 ± 0.2
0.6 ± 0.2
0.7 ± 0.2 2.7 ± 0.5
2.2 ± 0.5
1.7 ± 0.5 4.0 ± 0.5
3.7 ± 0.5
4.0 ± 0.5 11.8 ± 0.5
10.0 ± 0.5
10.0 ± 0.5
25 136
155
174 0.3 ± 0.1
0.2 ± 0.1
0.2 ± 0.1 0.6 ± 0.2
0.6 ± 0.2
0.7 ± 0.2 2.7 ± 0.5
2.2 ± 0.5
1.7 ± 0.5 4.0 ± 0.5
3.7 ± 0.5
4.0 ± 0.5 14.3 ± 0.5
13.5 ± 0.5
14.7 ± 0.5
50 136
155
174 0.3 ± 0.1
0.2 ± 0.1
0.2 ± 0.1 0.6 ± 0.2
0.6 ± 0.2
0.7 ± 0.2 2.7 ± 0.5
2.2 ± 0.5
1.7 ± 0.5 4.0 ± 0.5
3.7 ± 0.5
4.0 ± 0.5 15.6 ± 0.5
15.0 ± 0.5
15.6 ± 0.5
70 136
155
174 0.3 ± 0.1
0.2 ± 0.1
0.3 ± 0.1 0.6 ± 0.2
0.6 ± 0.2
0.7 ± 0.2 2.7 ± 0.5
2.2 ± 0.5
1.7 ± 0.5 4.0 ± 0.5
3.7 ± 0.5
4.0 ± 0.5 24.5 ± 0.5
29.0 ± 0.5
22.0 ± 0.5
Table 11.9 RF voltages along the initial RF signal path of the UHF radio (H5 band)
Power
level (W) Frequency
(MHz)
RF voltages (V)
Synthesizer
output Exciter
stage 1 Exciter
stage 2 Exciter
stage 3 Driver
output
10 400
435
470 0.3 ± 0.1
0.4 ± 0.1
0.3 ± 0.1 1.2 ± 0.2
2.4 ± 0.2
1.1 ± 0.2 4.2 ± 0.5
2.7 ± 0.5
2.1 ± 0.5 9.2 ± 0.5
6.8 ± 0.5
4.8 ± 0.5 3.0 ± 0.5
2.9 ± 0.5
2.0 ± 0.5
15 400
435
470 0.3 ± 0.1
0.3 ± 0.1
0.3 ± 0.1 1.2 ± 0.2
2.4 ± 0.2
1.1 ± 0.2 4.2 ± 0.5
2.7 ± 0.5
2.1 ± 0.5 9.2 ± 0.5
6.8 ± 0.5
4.8 ± 0.5 4.1 ± 0.5
3.8 ± 0.5
2.5 ± 0.5
20 400
435
470 0.4 ± 0.1
0.3 ± 0.1
0.3 ± 0.1 1.2 ± 0.2
2.4 ± 0.2
1.1 ± 0.2 4.2 ± 0.5
2.7 ± 0.5
2.1 ± 0.5 9.2 ± 0.5
6.8 ± 0.5
4.8 ± 0.5 4.8 ± 0.5
4.2 ± 0.5
3.0 ± 0.5
40 400
435
470 0.3 ± 0.1
0.3 ± 0.1
0.3 ± 0.1 1.2 ± 0.2
2.4 ± 0.2
1.1 ± 0.2 4.2 ± 0.5
2.7 ± 0.5
2.1 ± 0.5 9.2 ± 0.5
6.8 ± 0.5
4.8 ± 0.5 4.6 ± 0.5
4.0 ± 0.5
2.9 ± 0.5
60 400
435
470 0.3 ± 0.1
0.3 ± 0.1
0.3 ± 0.1 1.2 ± 0.2
2.4 ± 0.2
1.1 ± 0.2 4.2 ± 0.5
2.7 ± 0.5
2.1 ± 0.5 9.2 ± 0.5
6.8 ± 0.5
4.8 ± 0.5 8.1 ± 0.5
7.3 ± 0.5
5.3 ± 0.5