[AMRadio] HR-10 problem


abeck at xplornet.com abeck at xplornet.com
Wed Apr 12 08:04:01 EDT 2006


Have you made any mods to the DX-60? BTW, it makes a great CW pair.

I have a realistic DSP filter coming to help out with CW.


73
Alan


Quoting Brian Carling <bcarling at cfl.rr.com>:

> 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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