Connecting a Yaesu Transceiver to your PC

PC control of an Yaesu transceiver requires either an level-conversion interface or a RS232 cable, as a function of the model:

Model

Interface

FT-100

Yaesu CT-62 level-converting cable (see note below)

FT-450

straight-through female 9-pin RS232 to female RS232 cable or Yaesu SCU-17

FT-736

Yaesu FIF-232 and RS232 cable; see note below

FT-747

Yaesu FIF-232 and RS232 cable; see note below

FT-757GXII

Yaesu FIF-232 and RS232 cable; see note below

FT-767

Yaesu FIF-232 and RS232 cable; see note below

FT-817

Yaesu CT-62 level-converting cable (see note below) or Yaesu SCU-17

FT-840

Yaesu FIF-232 and RS232 cable; see note below

FT-847

null modem female 9-pin RS232 to female RS232 cable

FT-857

Yaesu CT-62 level-converting cable (see note below) or Yaesu SCU-17

FT-890

Yaesu FIF-232 and RS232 cable; see note below

FT-897

Yaesu CT-62 level-converting cable (see note below) or Yaesu SCU-17

FT-900

Yaesu FIF-232 and RS232 cable; see note below

FT-920

male 9-pin RS232 to female RS232 cable

FT-950

straight-through female 9-pin RS232 to female RS232 cable or Yaesu SCU-17

FT-990

Yaesu FIF-232 and RS232 cable; see note below

FT-991

USB A-B cable

- set Menu item 031 CAT RATE to 38400

- set Menu item 032 CAT TOT to 1000 msec

- set Menu item 033 CAT RTS to ENABLE

FT-1000, FT-1000D

Yaesu FIF-232 and RS232 cable; see note below

FT-1000MP

straight-through female 9-pin RS232 to female RS232 cable

FT-1000MP Mark-V

straight-through female 9-pin RS232 to female RS232 cable

FT-2000 Mark-V

straight-through female 9-pin RS232 to female RS232 cable or Yaesu SCU-17

FTDX-1200

straight-through female 9-pin RS232 to female RS232 cable or Yaesu SCU-17

FTDX-3000

USB A-B cable

- set Menu item 037 CAT SELECT to USB

- set Menu item 038 CAT RATE to 38400

- set Menu item 039 CAT TOT to 1000 msec

- set Menu item 040 CAT RTS to ENABLE

FTDX-5000

straight-through female 9-pin RS232 to female RS232 cable or Yaesu SCU-17

FTDX-9000

straight-through female 9-pin RS232 to female RS232 cable or Yaesu SCU-17

Note: older Yaesu transceivers designed to use the FIF-232 may not have a true TTL-compatible serial output: their SO (serial out) signal is "open emitter", which sources +5V for logic high and is open circuit (0V, high impedance) for logic low. This is not compatible with many of the RS-232 (or USB) to TTL converters that require a low impedance connection ("pull down") to ground for logic low. Typically, adding a 1.2 - 1.5K resistor between the SO signal and common ("ground") will enable operation.

If your PC has no free RS232 serial ports, you can use an USB-to-serial-port adaptor (e.g. from Belkin or ByteRunner), or you can choose an alternative interface that uses a USB interface rather than a serial port interface.

note: some CT-62 replacement cables from suppliers other than Yaesu use modem control signals for power; configure Commander accordingly

If you use one of your PC's USB ports, configure Windows to not automatically power down this port.

Commercial Interfaces

You'll find product reviews of the above, along with more alternatives at http://www.eham.net/reviews/products/53


Transceiver Control

Getting Started with DXLab

ConnectingYaesu (last edited 2017-05-25 03:40:44 by AA6YQ)