Telex Radiocom BTR-200 Series Service Manual page 19

Professional wireless intercom system
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PCB Transmit Assembly (878521-*)
Ref No.
Description
Part No.
PCB500
PCB Transmit
70724000
Capacitors
All capacitors in microfarads unless noted.
Ref No.
Description
Part No.
C501
Electrolytic, 100
51821524
C502-C504
Electrolytic, 1
51821106
C505
Electrolytic, 4.7
51821109
C506
Ceramic, 100 pF
35693019
C507
Electrolytic, 1
51821106
C508
Film, poly, .01
52719007
C509-C51O
Electrolytic, 4.7
51821109
C511
Electrolytic, 10
52723008
C512
Ceramic, .01
52676107
C513
Ceramic, 100 pF
35693019
C514
Ceramic, TC, 47 pF
52713002
C515
Ceramic, TC, 68 pF
52713003
C516',2
Ceramic, 22 pF
35693011
C516
3
Ceramic, 27 pF
35693012
C517
Ceramic, .01
52676107
C518
Ceramic, 1.5 pF
35693047
C519,,2
Ceramic, 30 pf
35693046
C519
3
Ceramic, 39 pF
35693014
C520',2
Ceramic, 75 pF
35693061
C520
3
Ceramic, 100 pF
35693019
C521
Ceramic, 100 pF
35693019
C522
Ceramic, .001
52676101
C523,,2
Ceramic, 12 pF
35693008
C523
3
Ceramic, 18 pF
35693010
C524'
Ceramic, 27 pF
35693012
C524
2
Ceramic, 24 pF
35693060
C524
3
Ceramic, 33 pF
35693013
C525
Ceramic, .001
52676101
C526
Ceramic,
',lOO
pF
35693019
C527
Ceramic, 3.3 pF
35693002
C528
Ceramic, 100 pF
35693019
C529,,2
Ceramic, 47 pF
35693015
C529
3
Ceramic, 68 pF
35693017
C530,,2
Ceramic, 15 pF
35693009
C530
3
Ceramic, 20 pF
35693048
C531
Ceramic, .0033 (Version 1)
52719004
C531
Ceramic, .001 (Version 2)
52676101
Variable Capacitors
VC501, VC502 Variable Capacitor
35837007
Transistors
Q501, Q502
Transistor, 2N5770
54689000
Q503
Transistor, MPS-901
760376
Integrated Circuits
mOl
IC,NE575N
53277003
U502
IC,78L05
54680005
Diodes
VVC501
Diode, MV2108
58675000
VVC502
Diode, MV2108
58675000
Variable Resistor
VR501
5K Variable resistor
57148068
Ref No.
Description
Part No.
Coils
T501
3
Coil
52978000
T501',2
Coil
52978002
T502, T503
Coil
52979000
T504
Coil
52977003
L501,,2
Coil, Air Wound
63725000
L501
3
Coil, Air Wound
63725005
L502,,2
Coil, Air Wound
6372..')000
L502
3
Coil, Air Wound
63725005
L503',2
Coil, Air Wound
63725000
L503
3
Coil, Air Wound
63725005
Crystals
Y501'
Crystal, 177.800 MHz
52989120
Y501
2
Crystal, 183.730 MHz
52989214
Y501
3
Crystal, 154.570 MHz
52989100
All resistors in ohms, 1/8 Watt, 5%, unless noted.
Resistors
R501, R502
30K
52154025
R503
4.7K (Version 1)
52154044
R503
15K (Version 2)
52154032
R504
10K
52154036
R505
15K
52154056
R506-R508
47K
52154020
R509, R510
10K
52154036
R511
820
52154062
R512
47
52154092
R513
47K
52154020
R514
5.6K
52154042
R515
100
52154084
R516
47
52154092
R517
8.2K
52154038
R518
470
52154068
R519
56
52154090
R520
47
52154092
R521
10K (Version 1)
52154036
R521
68K (Version 2)
52154016
R522
10K
52154036
Connector
P512
Header, 3 pin
670062
878521-*
Frequency
*Dash No.
Reference No.
177.800 MHz
-177
1
183.730 MHz
-183
2
154,570 MHz
-154
3
3-7/3-8 Blank

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