Tait TM8235, Service Manual

Page: 366 / 578

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
1 216
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