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: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > Sent: Monday, April 10, 2006 9:49 AM > To: [email protected] > 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 > ______________________________________________________________ > AMRadio mailing list > Home: http://mailman.qth.net/mailman/listinfo/amradio > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:[email protected] > AMfone Website: http://www.amfone.net > AM List Admin: Brian Sherrod/w5ami, Paul Courson/wa3vjb > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.1.385 / Virus Database: 268.4.0/306 - Release Date: 4/9/06 > -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.385 / Virus Database: 268.4.0/306 - Release Date: 4/9/06
