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1
PANEL DESCRIPTION
• MICROPHONE CONNECTOR
(Transceiver view)
y
GND (PTT ground)
t
PTT
r
Squelch switch
q
Microphone input
w
+8 V DC output
e
Frequency up/down
i
AF output
(varies with [AF])
u
GND
(Microphone ground)
[MIC]
PIN NO.
FUNCTION
DESCRIPTION
w
+8 V DC output
Max. 10 mA
e
Frequency up
Ground
Frequency down
Ground through 470
˘
r
Squelch open
“LOW” level
Squelch close
“HIGH” level
CAUTION: DO NOT short pin 2 to ground as this
can damage the internal 8 V regulator. DC voltage
is applied to pin 1 for microphone operation. Use
caution when using a non-Icom microphone.
Microphones (Continued)
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