W Microphone (Hm-103) - Icom IC-706 Instruction Manual

PANEL DESCRIPTION 1
E Microphone (HM-103)
Q UP/DOWN SWITCHES [UP]/[DN] @ LOCK SWITCH [LOCK]
Change the operating frequency. Locks the [UP]/[DN] switches.
e Continuous pushing changes the frequency continuous-
ly. © PTT SWITCH [PTT]
* Tuning step is 50 Hz when no TS indicator appears. Push and hold to transmit; release to receive.
TECHNICAL INFORMATION
* MICROPHONE CONNECTOR
ee
CAUTION: DO NOT short pin 1 to
ground as this can damage the internal 8 V
regulator.
AF output
@ Frequency up/down (9 GND (microphone ground) © Microphone input (D +8 V DC output
@ GND
® Squelch switch
© ®
Rear panel view
m 12345678
* HM-103 SCHEMATIC DIAGRAM
MICROPHONE "m MICROPHONE CABLE MICROPHONE PLUG
= +
O3 =A
ibn 12345678
2k
DOWN UP
PIT | RECEIVE 470
TRANSMIT