Icom SM-26 - SM-27 Part Names and Functions; PTT Lock Functionality; Microphone Plug Pin Assignments

SM-27
PART NAMES AND FUNCTIONS
Front view
icrophone
O PTT SWITCH [PTT]
Push to transmit; release to receive.
0 PTT LOCK [LOCK]
While holding down the [PTT] switch,
slide [LOCK] to continuously
transmit
without having to hold down the [PTT]
switch. Slide [LOCK] back to stop trans
mitting and switch to receive.
• Bottom view
Q MIC GAIN VOLUME [VOL]
Rotate to adjust the microphone out
put level.
• Use this control as an addition to the
transceiver's microphone gain setting,
if the connected transceiver has a mi
crophone gain control.
VA Rotating the control too far counter
y/ clockwise may result in an output
w level that is too high and distort the
//. transmit signal.
O PLUG PIN ASSIGNMENTS
The pins are described from the direction of the arrow in the illustration.
No connection
© Microphone output
(2)8 V DC input
3 No connection
© GND (Microphone ground)
-4-!— G GND (PTTground)
5 PTT
5 No connection