ICOM ic-756pro3 사용자 설명서

18

2

INSTALLATION AND CONNECTIONS

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The AH-4 or AH-3 must be connected to 

.

Coaxial cable (from the AH-4 or AH-3)

ANT1

Control cable

Transceiver

Ground

AH-4 or AH-3

Long wire or optional AH-2b

(Front panel view)

short pin 2 to ground as this

can damage the internal 8 V regulator.

DC voltage is applied to pin 1 for micro-

phone operation. Take care when using a non-Icom
microphone.

y

 GND (PTT ground)

t

 PTT

r

 Main readout squelch switch

q

 Microphone input

w

 +8 V DC output

e

 Frequency up/down

u

 GND 

(Microphone ground)

i

 Main readout AF output 

(varies with [AF]/[BAL])

w

+8 V DC output

Max. 10 mA

e

Frequency up

Ground

Frequency down

Ground through 470 Ω

r

Squelch open

“Low” level

Squelch closed

“High” level

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When 2 to 13.8 V is applied to pin 6 of 

, the

jack is activated for transverter operation

and the antenna connectors do not receive or trans-
mit any signals. (p. 20)

While receiving, the 

jack can be activated

as an input terminal from an external transverter.

While transmitting, the 

jack outputs signals

of the displayed frequency at –20 dBm (22 mV) as
signals for the external transverter.

Transverter jack

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