[AMRadio] HR-10 problem


Brian Carling bcarling at cfl.rr.com
Tue Apr 11 11:07:41 EDT 2006


Let us know how it works.
I use an HR10B here also and mine doesn't do that.

I am ready on the air with the DX60-HR10 combo.

Brian, AF4K

> I am sure I can find it.
> 
> Best 73
> Alan
> 
> 
> 
> Quoting W1EOF <w1eof at hamnutz.com>:
> 
> > My HR-10B doesn't do it Alan, so it's not inherent in the design. As Brett
> > suggested, look for voltages that are out of spec.
> > 
> > 73,
> > 
> > Mark W1EOF
> > 
> > > -----Original Message-----
> > > From: abeck at xplornet.com [mailto:abeck at xplornet.com]
> > > Sent: Monday, April 10, 2006 9:49 AM
> > > To: AMRadio at mailman.qth.net
> > > Subject: [AMRadio] HR-10 problem
> > >
> > >
> > > Hi,
> > >
> > > I am running an HR-10 RX in my shack outside and am wondering how
> > > to cure an
> > > annoying fault. Or, this may be bad design, but I don't remember
> > > this from when
> > > I was a kid.
> > >
> > > When i turn up the RF Gain, and end up close to full on it, I get
> > > a shift down
> > > in frequency of the CW note. So far that I have to retune the BFO
> > > to get it
> > > back.
> > >
> > > The RF Gain is in series with the Cathode of the first RF stage of the RX.
> > >
> > > perhaps a Zener diode to cure it?
> > >
> > > And if so, I guess I should measure the voltage someplace and
> > > clamp with a
> > > zener, but then again, I would be modifying the whole circut.
> > >
> > > Anyone know how to fix this?
> > >
> > > Best 73,
> > >
> > > Alan
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