
Not for FT-847 (search our store or contact us for a suitable cable).
FT-dx3000: CAT can only be used on USB OR DB9, not both. See Menu item 037 'CAT SELECT'.
FT-991 and FT-991A: DB9 connector needs switching to Cat - Menu item 028 ‘GPS/232C SELECT’For instructions on how to set up the amplifier for your transceiver correctly, please consult your amplifier's manual.
