[Elecraft] K3 transmit audio cuts out

[Eugene Balinski]

GL all around !

73
K1NR


On Sun, 29 Jul 2012 09:50:36 -0700
 "Ham Radio " <ag6az at hotmail.com> wrote:
> I have a crimper and will redo them today.  Right after I
> put a phase inverter on my 6m stack.  So many projects,
> so little time.
> 
> Need to get these things done before the baby comes.  he
> is due in on Tuesday.
> 
> Thanks,
> 
> Keith
> AG6AZ
> 
> -----Original Message----- From: Eugene Balinski
> Sent: Sunday, July 29, 2012 9:34 AM
> To: Keith Heimbold ; don at w3fpr.com
> Cc: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] K3 transmit audio cuts out
> 
> APP connectors can be a real pain if not done absolutely
> correctly.   I ended up purchasing a ratcheting crimper
> from HRO as I could never get just the right force on the
> manual one.  It was either too weak and the wire would
> fall
> out when tugged, or I would mash it too hard, and the
> contact would not fit in to the plastic housing.   The
> ratcheting crimper is first time, every time, at least
> for
> now
> 
> 73
> 
> K1NR
> 
> 
> On Sun, 29 Jul 2012 06:54:23 -0700
> Keith Heimbold <ag6az at hotmail.com> wrote:
> > Don,
> >
> > I am pretty sure that we found the culprit. The APP
> > connectors did not click properly for the one set and I
> > am examining the ones for the other. I will need to be
> > more diligent in making sure I get a good click
> inserting
> > into the plastic housing.
> >
> > I spent a lot of time rooting out any RFI issues but I
> > guess that is really time well spent since cleaning up
> my
> > shack and all the cables and wires is probably a good
> > idea.
> >
> > Thanks,
> >
> > Keith
> > AG6AZ
> >
> > Sent from my iPhone please excuse typos
> >
> > On Jul 29, 2012, at 6:34 AM, "Don Wilhelm"
> > <w3fpr at embarqmail.com> wrote:
> >
> > > Keith,
> > >
> > > If your APP connectors do not mate with a bit of a
> > *click*, then they are assembled incorrectly.  The
> blades
> > of the conductors *must* be locked over the tips of the
> > spring fingers located in the housing.
> > >
> > > Things come in threes so the sayings go, I have
> > repaired 2 KPA100s in the last week which did not have
> > the blades of the APP connector fully seated - I am
> > waiting on the 3rd one.
> > >
> > > 73,
> > > Don W3FPR
> > >
> > > On 7/28/2012 11:10 PM, Keith Heimbold wrote:
> > >> Don,
> > >>
> > >> I am now starting to think that it is an issue with
> my
> > power connectors that I am using.
> > >>
> > >> I bought some additional ferrites and put the balun
> > design 1113u in line to take care of RFI but i know
> > believe that the power connectors are a little
> > intermittent at times. I don't always get a solid click
> > when inserting into the back of the K3 or into the
> power
> > supply line. I like the convenience of those type of
> > connectors but they do seem to loosen up over time.
> > >>
> > >> Thanks again,
> > >>
> > >> Keith
> > >> AG6AZ
> > >>
> > >> Sent from my iPhone please excuse typos
> > >>
> > >> On Jul 28, 2012, at 3:44 PM, "Don Wilhelm"
> > <w3fpr at embarqmail.com> wrote:
> > >>
> > >>> Keith,
> > >>>
> > >>> You could also have a loose connection in your
> > microphone cable. When operating SSB, if there is no
> > audio, there will be no RF output.
> > >>> So you can look at the PTT, the audio, the power
> > supply, and just about every thing else in your
> station.
> >  Cables are usually the weak link.
> > >>>
> > >>> 73,
> > >>> Don W3FPR
> > >>>
> > >>> On 7/28/2012 5:34 PM, Keith Heimbold wrote:
> > >>>> Gene,
> > >>>>
> > >>>> Great suggestion. It maybe the connector going
> into
> > the rig or the connectors which I built.
> > >>>>
> > >>>> Thanks,
> > >>>>
> > >>>> Keith
> > >>>> AG6AZ
> > >>>>
> > >>>>
> > >>
> >
>
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