[Mic]; [Phones]; [Ant]; [Key] - Icom IC-718 Advanced Manual

4
CONNECTOR INFORMATION

[MIC]

Connect the supplied microphone�
8-pin connector (600 Ω)
(Front view)
8 AF output
1 Microphone input
2 +8 V DC output
3 Frequency up/down
4 Squelch line output
[MIC]
FUNCTION
PIN No.
2 +8 V DC output
Frequency up
3
Frequency down
Squelch open
4
Squelch close
CAUTION: DO NOT short the pin 2 to ground,
otherwise the internal 8 V regulator may be
damaged� DC voltage is also applied to the pin 1 for
a microphone operation� Be careful when using a
non-Icom microphone�

[PHONES]

Connect standard stereo headphones:
Output impedance: 8 Ω
6�35 mm (1/4 in) (d)
L The internal speaker is deactivated while an external
speaker is connected�
L When high impedance headphones are used, the audio
output level may be too high�
7 GND
(Microphone ground)
6 GND (PTT Ground)
5 PTT
DESCRIPTION
Maximum 10 mA
Ground
Ground through 470 Ω
"LOW" level
"HIGH" level
Right channel
GND
Left channel
[DC 13.8V]
Rear panel view

[ANT]

Connect an antenna for HF bands�
Input/Output impedance: 50 Ω

[KEY]

Connect a Paddle key or Straight key�
L You can select the key type in "Key Type" item in the
Initial Set mode�
• Paddle key
• Straight key
4-3
Accepts the regulated DC
power for 13�8 V DC ±15%
through the supplied DC power
cable�
z WARNING! NEVER reverse
the DC power cable polarity�
(unbalanced)
6�35 mm (1/4 inch) (d)
dot
com
dash
6�35 mm (1/4 inch) (d)
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