7
2
PANEL DESCRIPTION
n Microphone (HM-36)
• DESCRIPTION
q UP/DOWN SWITCHES [UP]/[DN]
Change the selected readout frequency or memory
channel.
• Continuous pushing changes the frequency or
memory channel number continuously.
• The [UP]/[DN] switch can simulate a key paddle.
Preset in the CW PADDL in initial set mode. (p. 32)
w PTT SWITCH
Push and hold to transmit; release to receive.
• MICROPHONE CONNECTOR
(Front view)
CAUTION: DO NOT short pin 2 to ground as this
can damage the internal 8 V regulator.
y GND (PTT ground)
t PTT
r Main readout squelch switch
q Microphone input
w +8 V DC output
e Frequency up/down
u GND
(Microphone ground)
i Main readout AF output
(varies with [AF])
• HM-36 SCHEMATIC DIAGRAM
[MIC]
FUNCTION DESCRIPTION
Pin No.
w +8 V DC output Max. 10 mA
e
Frequency up Ground
Frequency down Ground through 470
Ω
r
Squelch open “Low” level
Squelch closed “High” level
+
q
w
e
r
t
y
u
i
4700 pF
0.33 µF
Microphone
MIC
ELEMENT
22 kø
470 ø
DOWN UP
PTT
RECEIVE
TRANSMIT
Microphone Cable
Microphone Plug
1 kø
+
10 µF
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