RPR 561
TM1200 Issue 1
Page 5 - 16
COMP
COLL’TR
BASE
EMITTER
REMARKS
TR14
0
0
0
Tx DTMF MIC DISABLE
TR15
0
0
0
Tx MIC CLAMP
TR16
0
0
0
Tx MIC CLAMP
TR17
3.8
2.7
2.4
Tx MIC LOW-PASS FILTER
TR18
3.8
2.4
1.9
Tx MIC LOW-PASS FILTER
TR19
0.3
0.3
0
Tx TONE
TR20
1.02
3.3
3.95
Rx SERIES REGULATOR 1V SUPPLY
TR21
3.8
2.6
2.4
Tx MIC LOW-PASS FILTER
TR22
3.8
2.4
1.9
Tx MIC LOW-PASS FILTER
TR23
3.8
3.2
3.9
Rx SWITCHED BATTERY SW3V
TR24
0
0.8
1.3
Rx DATA LOW-PASS FILTER
TR25
0.7
0.65
0
Rx IF FILTER BUFFER AMPLIFIER
TR26
DATA INVERT (NOT USED)
TR27
3.2
3.5
4
Rx DATA SWITCH POWER ENABLE
TR28
0.38
0.43
0.015
Rx NOISE SQUELCH
TR29
0.1
0.1
0.5
Rx AUDIO HIGH-PASS FILTER
TR31
1.03
1.05
0.37
Rx LOCAL OSCILLATOR
TR32
0.78
0.65
0
Rx MIXER
TR35
3.53
0.74
0
Rx RF AMPLIFIER
TR36
0.5
0
0
SCHMITT TRIGGER NOISE SQUELCH
TR37
0
0.47
0.43
NOISE SQUELCH RECTIFIER
TR38
0.6
0.6
0.02
NOISE SQUELCH AMPLIFIER
TR39
0.6
0.6
0.02
NOISE SQUELCH AMPLIFIER
TR40
0.6
0.6
0.1
NOISE SQUELCH AMPLIFIER
TR41
0.9
0.9
0.4
NOISE SQUELCH HIGH-PASS FILTER
TR42
0
0.2
0.8
NOISE SQUELCH AMPLIFIER
TR43
0.7
0.8
0.3
NOISE SQUELCH AMPLIFIER
TR44
2.9
4
4
SWITCHED BATTERY
Table 1: Radio Board DC Levels (A)
Summary of Contents for RPR 561
Page 40: ...RPR 561 TM1200 Issue 1 Page 3 5 Figure 2 Radio Board Receiver Block Diagram...
Page 49: ...RPR 561 TM1200 Issue 1 Page 4 2 INTENTIONALLY BLANK...
Page 87: ...RPR 561 TM1200 Issue 1 Page 5D 2 INTENTIONALLY BLANK...
Page 105: ...RPR 561 TM1200 Issue 1 Page 7 2 INTENTIONALLY BLANK...
Page 108: ...TM1200 Issue 1 Figure 10 Decoder Component Location Side 1 Page 7 21 22...
