ICOM 318200 Manuale Utente

22

2

INSTALLATION AND CONNECTIONS

N

(Front panel 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])

GND
(Microphone ground)

u

w

+8 V DC output

Max. 10 mA

e

Frequency up

Ground

Frequency down

Ground through 470 

˘

r

Squelch open

“Low” level

Squelch closed

“High” level

 

 short pin 2 to ground as this 

can damage the internal 8 V regulator. A DC volt-
age is applied to pin 1 for microphone operation. 
Use caution when using a non-Icom microphone.

N

D HM-36

q

w

D  SM-50 (option)

q

w

r

e

q UP/DOWN SWITCHES [UP]/[DN]
 

 Push to change the frequency or memory channel.

s

number continuously increases or decreases.

s

[XFC], push to change the transmit frequency.

s

the “MIC Up/Down Keyer” item is set to “ON” in the 
Keyer Set mode. In such case, the frequency and mem-
ory channel cannot be changed using the [UP]/[DN] 
switches. (p. 43)

s

he dot-dash polarity of the 

[UP]/[DN] 

switch in the “Paddle Polarity” item in the Keyer Set 
mode. When “Normal” is selected, [UP] sends a dash, 
and [DN] sends a dot.

w PTT SWITCH
 

Hold down to transmit; release to receive.

e PTT LOCK SWITCH (available on only the SM-50)
 

Push to toggle between transmit and receive.

r LOW CUT SWITCH (available on only the SM-50)
 

 Push to cut out the low frequency components of 
input voice signals.