[digitalradio] Re: Old MFJ 1272B TNC/Mic switch circuit or manual?

reply. 73, Al N1AW Amherst, MA --- In digitalradio@yahoogroups.com, "Dave wej" wrote: > > I have several types here, can you email a picture of the inside for me > > Dave Garber > VE3WEJ/VE3IE ve3...@... > > > - Original Message - > From: Al

[digitalradio] Old MFJ 1272B TNC/Mic switch circuit or manual?

older one? I suspect mine is a rev. 1 unit, there is no visible rev. number on the circuit board. 73, Al Woodhull, N1AW Amherst, MA