Tait TM8115

366 Transmitter Fault Finding (25W) TM8100/TM8200 Service Manual
© Tait Electronics Limited June 2006
Table 12.11 RF voltages along the initial RF signal path of the VHF radio (D1 band)
Power level
(W)
Frequency
(MHz)
RF voltages (V)
Synthesizer
output
Buffer
output
Exciter
output
Driver
output
1216
241
266
0.3 ± 0.1
0.4 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
3.8 ± 0.5
3.7 ± 0.5
3.5 ± 0.5
1.3 ± 0.5
1.0 ± 0.4
2.3 ± 0.9
5 216
241
266
0.3 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
3.3 ± 0.5
3.2 ± 0.5
3.6 ± 0.5
3 ± 1
3 ± 1
6 ± 2
12 216
241
266
0.4 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
0.2 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
3.3 ± 0.5
3.6 ± 0.5
3.2 ± 0.5
4 ± 2
4 ± 2
9 ± 4
26 216
241
266
0.3 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
3.8 ± 0.5
3.5 ± 0.5
3.4 ± 0.5
4 ± 2
5 ± 2
12 ± 5
40 216
241
266
0.3 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
0.2 ± 0.1
3.3 ± 0.5
3.3 ± 0.5
3.6 ± 0.5
12 ± 5
9 ± 4
20 ± 8
Table 12.12 RF voltages along the initial RF signal path of the UHF radio (H5 and H6 bands)
Power level (W) Frequency (MHz) RF voltages (V)
H5
band
H6
band
Synthesizer
output
Buffer
output
Exciter
output
Driver
output
1 400
435
470
450
490
530
0.2 ± 0.1
0.2 ± 0.1
0.2 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
0.4 ± 0.1
4.5 ± 0.5
4.6 ± 0.5
3.9 ± 0.5
2.3 ± 0.5
1.5 ± 0.5
0.8 ± 0.5
5 400
435
470
450
490
530
0.2 ± 0.1
0.2 ± 0.1
0.2 ± 0.1
0.3 ± 0.1
0.4 ± 0.1
0.4 ± 0.1
4.6 ± 0.5
4.6 ± 0.5
3.6 ± 0.5
3.6 ± 0.5
2.6 ± 0.5
1.2 ± 0.5
12 400
435
470
450
490
530
0.2 ± 0.1
0.2 ± 0.1
0.2 ± 0.1
0.2 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
3.9 ± 0.5
4.0 ± 0.5
3.4 ± 0.5
4.5 ± 0.5
3.9 ± 0.5
1.7 ± 0.5
26 400
435
470
450
490
530
0.2 ± 0.1
0.1 ± 0.1
0.1 ± 0.1
0.2 ± 0.1
0.2 ± 0.1
0.2 ± 0.1
3.8 ± 0.5
3.6 ± 0.5
3.0 ± 0.5
4.6 ± 0.5
4.5 ± 0.5
1.8 ± 0.5
40 400
435
470
450
490
530
0.2 ± 0.1
0.2 ± 0.1
0.2 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
0.3 ± 0.1
4.2 ± 0.5
3.6 ± 0.5
3.2 ± 0.5
8.6 ± 0.5
8.2 ± 0.5
2.5 ± 0.5