Icom IC-7600 Instruction Manual - Page 30
■ Microphone connector information, ■ Microphones, ◇ HM-36, ◇ SM-50 (Option), DHM-36 DSM-50
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2 INSTALLATION AND CONNECTIONS ■ Microphone connector information (Front panel view) q Microphone input w +8 V DC output i Main readout AF output (varies with [AF]) u GND (Microphone ground) y GND (PTT ground) e Frequency up/down t PTT [MIC] Pin No. w e r FUNCTION +8 V DC output Frequency up Frequency down Squelch open Squelch closed DESCRIPTION Max. 10 mA Ground Ground through 470 ˘ "Low" level "High" level r Main readout squelch switch 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 D HM-36 q q w w D SM-50 (Option) q UP/DOWN SWITCHES [UP]/[DN] Change the selected readout frequency or memory channel. • Pressing a switch continuously changes the frequency or memory channel number continuously. • While pushing [XFC], the transmit readout frequency can be controlled while in split frequency operation. • The [UP]/[DN] switch can simulate a key paddle. Preset in the keyer set mode. (p. 45) w PTT SWITCH Push and hold to transmit; release to receive. e PTT LOCK SWITCH (available for SM-50 only) Push to toggle between transmit and receive. r LOW CUT SWITCH (available for SM-50 only) Push to cut out the low frequency components of input voice signals. q rq w r e w e 23