ICOM 217700 User Manual
• M
MIIC
CR
RO
OP
PH
HO
ON
NE
E C
CO
ON
NN
NE
EC
CT
TO
OR
R
8
1
PANEL DESCRIPTION
■ M
Miic
crro
op
ph
ho
on
ne
e ((H
HM
M--1
10
03
3))
q
U
UP
P//D
DO
OW
WN
N S
SW
WIIT
TC
CH
HE
ES
S [[U
UP
P]]//[[D
DN
N]]
Change the operating frequency.
• Push and hold to change the frequency continuously.
• Tuning step is 50 Hz when no TS indicator appears.
• Tuning step is 50 Hz when no TS indicator appears.
w
L
LO
OC
CK
K S
SW
WIIT
TC
CH
H [[L
LO
OC
CK
K]]
Locks the [UP]/[DN] switches.
e
P
PT
TT
T S
SW
WIIT
TC
CH
H [[P
PT
TT
T]]
Push an
d hold to transmit; release to receive.
DN
UP
LOCK
OFF
ON
➊
➋
➌
TECHNICAL INFORMATION
P
PIIN
N N
NO
O..
F
FU
UN
NC
CT
TIIO
ON
N
D
DE
ES
SC
CR
RIIP
PT
TIIO
ON
N
1
+8 V DC output
Max. 10 mA
2
Frequency up
Ground
Frequency down
Ground through 470
Ω
8
Squelch open
“LOW” level
Squelch closed
“HIGH” level
➃
PTT
➅
Microphone input
➁
Frequency up/down
➆
GND
➀
+8 V DC output
➇
Squelch switch
➄
GND (microphone ground)
➂
AF output
Rear panel view
1 2345 678
• H
HM
M--1
10
03
3 S
SC
CH
HE
EM
MA
AT
TIIC
C D
DIIA
AG
GR
RA
AM
M
4700p
4700p
10
µ
0.33
µ
+
+
MICROPHONE
MIC
ELEMENT
ELEMENT
2k
2.2k
470
DOWN
UP
PTT RECEIVE
TRANSMIT
MICROPHONE
CABLE
CABLE
MICROPHONE PLUG
1 2345678
C
Ca
au
uttiio
on
n::
DO NOT short pin 1 to ground as
this can damage the internal 8 V regulator.
IC-706MKIIG.qxd 02.3.27 13:53 Page 8