Furuno FS-2575 - Fabrication of TTYCSLA Series; EXT BK (SSB Radiotelephone, Etc.)

2. WIRING
2-14
EXT BK (SSB radiotelephone, etc.)
Note: When the GND line from other radiotelephone is connected to the chassis, float
the ground.
For connection to a transceiver unit, see the BK interface interconnection diagram
at the back of this manual. Connect the SSB radiotelephone to EXT BK in the Trans-
ceiver Unit with the cable MPYC-4 (or equivalent).
Note: The BK interface is not required when connecting the transceiver unit FS-
1575T/2575T/5075T to each other.
Terminal no. on
TB6 of T-IF
Board
Signal name Function Object
14 Go to GND when at TX BK control for other radiotelephone
15 Receiver circuit muted
when this line goes GND.
BK control from other radiotele-
phone
16 BK_24V Output voltage: 24 VDC Power of relay BK for other radio-
telephone
17 0V GND 0V
18 GND
8 - 10
Fabrication of TTYCSLA series
L
Sheath
Clamp here by cable clamp.
Vinyl tape
30
Drain wire
60
5
Length of “L”
FS-1575T
FS-2575T/FS-5075T
190
120
5
Cover the drain wire with the
heat-shrinkable tubing, then attach the
crimp-on lug to it.
TXKEY
RX_MUTE
FS-1575T/2575T/5075T
T-IF Board
(05P0861)
14
15
16
17
18
TB6
TXKEY
TX KEYED
RX_MUTE
GND
Receiver
Relay
Example of connection
with a receiver
BK_24V
0V
Vinyl tape
Attach to WAGO
connector.
20 30 20
Set this part in cable clamp.
Sheath
Armor
8 - 10 50
170 (FS-1575T)
230 (FS-2575T,
FS-5075T)