Hook up the cables to your soundcard line-in/line-out connect the din cable to the appropriate din out on your Icom (or Yaesu) plug in your paddles/pump and, finally, connect the USB to your PC.

This is the most reliable and simple-to-use interface I have used in over 20 years of sound-card digimode activity.

Any required drivers were automatically installed by Windows 10. Once I’d worked out what leads went where it immediately began doing what it needed to. I found a used U5 Link on eBay for a very good price (£15/$20). – 1 x Serial Port DB9 Type CAT Cable (depends on radio type) – WSJT JTDX HRD DM780 LOGG32NIMM WriteLog ECHOLINK easyPal SSTV Cw_player APRS AGWTracker MMTTY MMVARI MIXW etc. – YAESU: FT450, FT950, Compatible with RS232-CAT port – FT-450D HRD set: rate 4800, leave RTS DTR both blank, radio using VFO-A. – Remote Interface standardization CAT: CAT (MINI DIN 8).

– Standardized voice / data radio interfaces: DATA (MINI DIN 6). – Plug and play, external power supply not required.

– Special customized high-quality audio isolation transformers, shielded isolation. – Complete signal support: Contains TXD RXD RTS DTR CTS signals. – Radio remote control interface support: full optical isolation, CAT remote support stable high-speed communications 115200 – Support mechanisms refined data cable to connect the cable, plug and play – Original 6N137 optocoupler high-speed communications, communication rates up to 115200.

Easypal setup windows 8.1