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SECTION 9
BOARD LAYOUTS
• MAIN UNIT (TOP VIEW)
To J1 (VR UNIT)
9 - 1
R87
J2
KEYM 5
GND
MIC
MICG
PTT 1
To J2 (SQL UNIT)
• LOGIC UNIT (TOP VIEW)
D
S
D
3 S
D
S
C
D
I
S
T
J1
GND
30
29
GND
UNLK
PDATA
PCK
PSTB
BPF
H/L
SQLC
TXDET
SQL
TMUTE
KEYM
• VR UNIT (TOP VIEW)
SEND
PTT
RCV
PTTC
DSCDEC
RMUTE
WXDEC
J1
DSCENC
HVS
1
5V
5V
VOL1
NC
VOL2
HVS
SQLV
GND
BPLVL
BEEP
HV
5
SP−
2
1
SP+
• SQL UNIT (TOP VIEW)
J2
GND
1
SQLV
SQLI
3
1
S
C
A
N
C
H
1
• HM-164B/SW/G
L3
MC1
L4
MIC
MICG
PTT
KEYM
GND
D
4 S
6
S1
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