Furuno FS-2570 - Manual (Page 42)

3-8
3.5 Preamp Setting (For FAX-5)
When using the preamp for the watch receiver antenna, set J3 on the W/R Board to
ACTIVE in the transceiver unit.
J2
J3
ACTIVE
A
CTIVE
RX
05P0734
J1
Change jumper to
ACTIVE position.
J4
W/R Board, 05P0734