On 12/29/2016 21:40, Richard Fjeld wrote: > If the key contacts did not make good contact, it caused a chirp. > I would describe it as a 'dirty' sounding chirp, but it was a chirp. > Other keys worked fine. > > Dick, n0ce Sounds like the old days of cathode keying! 73, Scott K9MA -- Scott K9MA k9ma at sdellington.us