Tait TM8100 mobiles - Page 319

TM8100/TM8200 Service Manual Transmitter Fault Finding (>25W) 319
© Tait Electronics Limited November 2007
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 (G2 band)
Power
level (W)
Frequency
(MHz)
RF voltages (V)
Synthesizer
output
Exciter
stage 1
Exciter
stage 2
Exciter
stage 3
Driver
output
10 350
375
400
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
15 350
375
400
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
20 350
375
400
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
40 350
375
400
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
60 350
375
400
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