[Elecraft] K3 - erratic keyer behavior serial related

[Don Wilhelm]

Mike,

That would be Ham Radio Deluxe - Simon Brown's (HB9DRV) gift to ham 
radio.  Professionally written software available at no cost.

73,
Don W3FPR

Mike wrote:
> I should probably know this, but what's HRD?
>
> 73, Mike NF4l
>   
>