
- 14 -
mbos2a2 (06.09.2012)
Kompetent für Elektroniksysteme
mbos2a2 (06.09.2012)
- 15 -
Kompetent für Elektroniksysteme
Board Layout
The connection cable MBOS2Kx to junction box MBOS2AB1 or MBOS2AB6 is connected to sockets
ST1 and ST2.
Sockets ST1 + ST2 for Junction Box
Radio 1
Radio 3
ST2 Pin 10 AF-input
ST1 Pin 2 AF-input
ST2 Pin 14
GND
ST2 Pin 16 GND
ST2 Pin 7 AF-output
ST2 Pin 3 AF-output
ST2 Pin 8 AF-output
ST2 Pin 4 AF-output
ST1 Pin 13
squelch input
ST1 Pin 15 squelch input
ST1 Pin 9
busy line
ST1 Pin 11 busy line
ST1 Pin 8
PTT keying
ST1 Pin 6 PTT keying
ST2 Pin1 3
+12V, external DC from radio ST2 Pin 11 +12V, external DC from radio
Radio 2
Radio 4
ST2 Pin 9 AF-input
ST1 Pin 1 AF-input
ST1 Pin 4
GND
ST2 Pin 15 GND
ST2 Pin 5 AF-output
ST2 Pin 1 AF-output
ST2 Pin 6 AF-output
ST2 Pin 2 AF-output
ST1 Pin 14
squelch input
ST1 Pin 16 squelch input
ST1 Pin 10
busy line
ST1 Pin 12 busy line
ST1 Pin 5
PTT keying
ST1 Pin 7 PTT keying
ST1 Pin 3
+12V, external DC from radio ST2 Pin 12 +12V, external DC from radio
All GND-pins are connected on the main board and can thus be switched.
ST 3
ST 12
ST 11
ST 10
ST 4
ST 1 ST 2