Tait TM8100 mobiles, Service Manual

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TM8100/TM8200 Service Manual Transmitter Fault Finding (25W) 383
© Tait Electronics Limited November 2007
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