[VHFcontesting] FT-840 vs. FT-726R; works - doesn't work

[rwing@southwind.net (Randy Wing)]

I have a setup that allows me to key in PSK31 on an FT-840 Yaesu HF radio.
I also have a FT-726R Yaesu 2 meter all mode radio - same pinouts on the
microphone.  However, it doesn't work using the WSJT software on the
FT-726R.  So, I tried running WSJT on the Yaesu FT-840 HF radio and it
worked!

Does anyone have an idea what might be going on?  :)

Thanks!

73

Randy
N0LD