[Elecraft] K4 Production Relase 28 and SWR display issues

[Andy Durbin]

" I wrote code to invalidate and dash my display of the serial data SWR based on forward power level. "

That wasn't accurate.  What I actually do is "dash" the SWR display if there has been no TX on current TX frequency (+/- 500 Hz).  I display X.XX if there was a TX on current frequency but forward power level was lower that the value assumed to give a valid SWR reading.

Yes, it's more complex than most SWR displays but I have a low tolerance for misleading data.

Andy, k3wyc