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Vertex Standard MH-75A8J Service Manual

Vertex Standard MH-75A8J Service Manual

16-keypad/dtmf microphone

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16-K
/DTMF M
EYPAD
MH-75
Service Manual
The MH-75
is a 16-Keypad/DTMF Microphone designed especially for Vertex Standard transceivers
A8J
Please refer to the Vertex Standard products catalog for the correct microphone for the trans-
ceiver you are using
1
2
4
7
8
0

Specifications

Mic Element:
Mic Impedance:
Operating Voltage Range:
Current Drain (Approx.):
Operating Temperature Range:
Weight (Approx.):
MH-75
Service Manual
A8J
ICROPHONE
A8J
3
A
5
6
B
9
C
D
Electret Condenser
600 Ohm
8 to 9 V DC
20 mA
–22 °F to +140 °F (–30 °C to +60 °C)
7 oz. (200 g)
Vertex Standard LMR, Inc.
4-8-8 Nakameguro, Meguro-Ku
Tokyo 153-8644, Japan
©2012 Vertex Standard LMR, Inc.
EAG22X90A
.
1

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Summary of Contents for Vertex Standard MH-75A8J

  • Page 1: Specifications

    EAG22X90A  The MH-75 is a 16-Keypad/DTMF Microphone designed especially for Vertex Standard transceivers  Please refer to the Vertex Standard products catalog for the correct microphone for the trans- ceiver you are using Specifications Mic Element: Electret Condenser Mic Impedance:...
  • Page 2 Circuit Diagram (Lot. 1) MH-75 Service Manual...
  • Page 3 Parts Layout (Lot. 1) Side A LC87F2H08AU 2SK3973 (5V) (Q1004) (Q1002) DTC144EUA (26) LMV321IDCKR (Q1005) (Q1003) UA78L05A (Q1001) Side B MH-75 Service Manual...
  • Page 4 Circuit Diagram (Lot. 2~) MH-75 Service Manual...
  • Page 5 Parts Layout (Lot. 2~) Side A LC87F2H08AU 2SK3973 (5V) (Q1004) (Q1002) DTC144EUA (26) LMV321IDCKR (Q1005) (Q1003) UA78L05A (Q1001) Side B MH-75 Service Manual...
  • Page 6: Parts List

    Parts List REF. DESCRIPTION VALUE TOL. MFR’S DESIG VXSTD P/N VERS. LOT. SIDE C 1001 CHIP TA.CAP. 10uF TEESVB21C106M8R K78120025 C 1002 CHIP CAP. 6.3V GRM188B10J105KA01D K22084801 C 1003 CHIP CAP. 0.1uF GRM188B11C104KA01D K22124805 C 1004 CHIP CAP. 0.001uF GRM188B11H102KA01D K22174821 C 1005 CHIP TA.CAP.
  • Page 7: Exploded View

    Exploded View RA1028200 HOOK  RA0824500 PLATE (HANGER)  Q6000116  TERMINAL (B6 M4)  RA0818700 RA1041300  WEIGHT PTT KNOB  RA0818600 RUBBER (PTT)   RA1041200   RA0183800 REAR CASE   MIC HOLDER RUBBER RA0187600 SHEET (MICRO TEX 8X4) ...