Furuno FS-2570 - Manual (Page 44)

4-2
How to use SSB antenna coupler for DSC routine frequency receive
To use the SSB antenna coupler for routine watch keeping, the following modification is
necessary.
Note: When transmitting, DSC routine frequency cannot be received.
1. Open the transceiver unit.
2. Remove the shield cover from the TX FIL Board (05P0736).
3. Cut the jumper JP2 on the TX FIL Board.
4. Solder the jumper wire to JP1.
J3 JP1 JP2
J10 J9
TX_FIL Board, 05P0736
5. Disconnect the coaxial cable from J3, and then reconnect it to J10.
6. Remove the shield cover of the W/R2 Board (05P0734A).
7. Run the cable assy. with mini-pin (L-500) between J7 on TX-RX Board and J4 on W/R 2
Board.
TX_FIL Board
05P0736
Tx ANT J3
J9
J10
I/F
circuit
I/F
circuit
JP2
JP1
PRE SEL Board TX-RX Board
to J2 on W/R Board
Antenna
coupler
TX_FIL Board
8. Run the cable assy. with mini-pin (L-770) between J9 on the TX-FIL Board and J2 on the
W/R 2 Board.
9. Remount the shield cover, and then close the transceiver unit cover.