Tait TM8110

TM8100/TM8200 Service Manual Transmitter Fault Finding (25W) 365
© Tait Electronics Limited June 2006
Table 12.9 RF voltages along the initial RF signal path of the VHF radio (B1 band)
Power level
(W)
Frequency
(MHz)
RF voltages (V)
Synthesizer
output
Buffer
output
Exciter
output
Driver
output
1 136
155
174
0.3 ± 0.1
0.3 ± 0.1
0.2 ± 0.1
0.2 ± 0.1
0.3 ± 0.1
0.2 ± 0.1
2.4 ± 0.5
2.5 ± 0.5
2.6 ± 0.5
1.8 ± 0.5
1.0 ± 0.5
1.5 ± 0.5
5 136
155
174
0.3 ± 0.1
0.2 ± 0.1
0.2 ± 0.1
0.2 ± 0.1
0.3 ± 0.1
0.2 ± 0.1
2.5 ± 0.5
2.6 ± 0.5
2.6 ± 0.5
3.0 ± 0.5
1.5 ± 0.5
2.6 ± 0.5
12 136
155
174
0.3 ± 0.1
0.2 ± 0.1
0.2 ± 0.1
0.2 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
2.5 ± 0.5
2.6 ± 0.5
2.7 ± 0.5
4.2 ± 0.5
2.0 ± 0.5
3.8 ± 0.5
26 136
155
174
0.3 ± 0.1
0.2 ± 0.1
0.2 ± 0.1
0.2 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
2.4 ± 0.5
2.4 ± 0.5
2.5 ± 0.5
3.3 ± 0.5
1.7 ± 0.5
4.5 ± 0.5
40 136
155
174
0.3 ± 0.1
0.2 ± 0.1
0.3 ± 0.1
0.4 ± 0.1
0.4 ± 0.1
0.3 ± 0.1
2.5 ± 0.5
2.5 ± 0.5
2.5 ± 0.5
8.2 ± 0.5
5.5 ± 0.5
7.7 ± 0.5
Table 12.10 RF voltages along the initial RF signal path of the VHF radio (C0 band)
Power level
(W)
Frequency
(MHz)
RF voltages (V)
Synthesizer
output
Buffer
output
Exciter
output
Driver
output
1 174
199.5
225
0.4 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
0.5 ± 0.1
0.6 ± 0.1
0.4 ± 0.1
3.2 ± 0.5
3.1 ± 0.5
2.6 ± 0.5
1.5 ± 0.1
1.9 ± 0.1
1.3 ± 0.1
5 174
199.5
225
0.5 ± 0.1
0.3 ± 0.1
0.4 ± 0.1
0.6 ± 0.1
0.7 ± 0.1
0.4 ± 0.1
2.8 ± 0.5
3.0 ± 0.5
2.6 ± 0.5
3.0 ± 0.1
3.6 ± 0.1
2.7 ± 0.1
12 174
199.5
225
0.4 ± 0.1
0.3 ± 0.1
0.4 ± 0.1
0.5 ± 0.1
0.7 ± 0.1
0.4 ± 0.1
2.4 ± 0.5
3.0 ± 0.5
2.6 ± 0.5
4.4 ± 0.1
5.1 ± 0.1
4.0 ± 0.1
26 174
199.5
225
0.5 ± 0.1
0.3 ± 0.1
0.6 ± 0.1
0.7 ± 0.1
0.8 ± 0.1
0.5 ± 0.1
2.4 ± 0.5
2.8 ± 0.5
2.4 ± 0.5
5.0 ± 0.1
5.7 ± 0.1
5.5 ± 0.1
40 174
199.5
225
0.4 ± 0.1
0.5 ± 0.1
0.8 ± 0.1
0.8 ± 0.1
0.9 ± 0.1
0.4 ± 0.1
2.7 ± 0.5
2.9 ± 0.5
2.8 ± 0.5
6.7 ± 0.1
8.1 ± 0.1
7.5 ± 0.1