4
13. GND - connect-12V terminal of external power supply
Connecting the switch OM SW 2/10+
Antenna switch OM SW 2/10+ is designed for OM Power amplifier ,
OM4001A and can be directly controlled without any additional device, or other
type of BCD decoder. Selection of required antenna port is controlled with BCD
code (5V logic compatible with YAESU BCD code).
Antenna BCD code table
D
C
B
A
Logic value
Antenna port
0
0
0
0
0
UNDEFINED
0
0
0
1
1
ANT 1
0
0
1
0
2
ANT 2
0
0
1
1
3
ANT 3
0
1
0
0
4
ANT 4
0
1
0
1
5
ANT 5
0
1
1
0
6
ANT 6
0
1
1
1
7
ANT 7
1
0
0
0
8
ANT 8
1
0
0
1
9
ANT 9
1
0
1
0
A
ANT 10
1
0
1
1
B
UNDEFINED
1
1
0
0
C
UNDEFINED
1
1
0
1
D
UNDEFINED
1
1
1
0
E
UNDEFINED
1
1
1
1
F
UNDEFINED
TERMINAL CONNECTION
Connect terminals A,B,C and D on
the antenna switch to the ANT/BPF
connector on the ,
OM4001A power amplifier!
(Connector ANT/BPF
see below) - Connect 12V terminal
to the ground (PIN 6 or 7) and +12V
terminal to pin 8 of ANT/BPF
connector!
-12 V DC +12 V DC
