Yaesu FP-12 FP-4 Power Supply

FP-12 Power supply

The FP-12 Power supply provides an output voltage of 13,8 VDC at 12 amperes,

designed for use with the FT-7B and CPU-2500R transceivers,

and includes an 8 ohm speaker for base station listening.

Seen here the Yaesu FP-12 Speaker Power Supply with the CPU-2500R 2m transceiver.

FP-4 Power supply

The FP-4 power supply is designed to provide an output voltage of 13.8 VDC at 4 Amps

designed for base station operation of the FT-7, FT-227R, FT-817

or similar transceivers designed for DC operation.

The FP-4 makes a good choice for the QRP operation.

Both power supplies FP-12 and FP-4 use the same (TA7089M) voltage regulator IC which was used in some Yaesu FP- power supplies. The regulator was available in an 8-pin radial lead package which is no longer available. So the TA7089P in a 14-pin DIP package must be used as a replacement. Yaesu use to sell a replacement TA7089P in a 14-pin DIP package for these power supplies (P/N D3000448) it was mounted on a small circuit board with wires attached, however even this item is also no longer available. So when looking for the regulator I.C. you are basically on your own finding one.

If you have trouble printing or viewing the schematics

down load both FP-12 & FP-4 schematics in PDF here.

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Carol L .Maher W4CLM