PANEL DESCRIPTION

1

D Microphone connector

1

MICROPHONE CONNECTOR INFORMATION

Rear panel view

87654321

HM-151

q+8 V DC output w Frequency up/down e M8V SW

r PTT

t GND (Microphone ground) y Microphone input

u GND

i DATA IN

HM-103

q+8 V DC output w Frequency up/down e M8V SW

r PTT

t GND (Microphone ground) y Microphone input

u GND

i Squelch switch

CAUTION:DO NOT short pin 1 to ground as this can damage the internal 8 V regulator.

• When HM-151 is connected

PIN NO.

FUNCTION

DESCRIPTION

1

+8 V DC output

Max. 10 mA

 

 

 

2

Frequency up

Ground

 

 

Frequency down

Ground through 470 Ÿ

 

3

HM-151 connection

Goes to ground to connect

 

 

 

8

HM-151 data

Control signal input

 

 

 

 

 

 

• When HM-103 is connected

 

 

 

 

PIN NO.

FUNCTION

DESCRIPTION

1

+8 V DC output

Max. 10 mA

 

 

 

2

Frequency up

Ground

 

 

Frequency down

Ground through 470 Ÿ

 

3

HM-151 connection

Open to pin 8 as SQL

 

 

 

8

Squelch open

“LOW” level

 

 

Squelch closed

“HIGH” level

 

 

 

 

 

 

 

10

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Image 19
Icom IC-7000 instruction manual Microphone connector, Microphone Connector Information