Vertex Standard MH-75A8J User Manual

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

Vertex Standard MH-75A8J Specifications

General

Brand	Vertex Standard
Model	MH-75A8J
Category	Keypad
Language	English

Summary

Specifications

Mic Element

Specifies the type of microphone sensing element used.

Mic Impedance

Indicates the electrical impedance of the microphone in Ohms.

Operating Voltage Range

Defines the acceptable DC voltage range for operation.

Current Drain (Approx.)

States the approximate current the microphone consumes.

Operating Temperature Range

Specifies the temperature limits for reliable operation.

Weight (Approx.)

Provides the approximate weight of the microphone assembly.

Circuit Diagram (Lot. 1)

Parts Layout (Lot. 1)

Circuit Diagram (Lot. 2~)

Parts Layout (Lot. 2~)

Parts List

Exploded View