Well it looks like I have a problem. There is an intermittent buzz on the speaker audio. When I turn on the radio it works perfectly. But after a few minutes a strong buzz overlays the audio. It is sever. You can hear the stations under the buzz. If I turn the radio off and immediately back on, the buzz is still there. However if I leave the radio off for 3 or 4 minutes and turn it on, it is fine for a few minutes and then the buzz pops back on. Also keying the radio on CW also seems to fire up the receiver buzz. Note that it is okay on a pair of headphones. It is like it is going into oscillation. Everything else on the radio seems normal.
Any suggestions? I suspect a component in the audio amplifier. Does the headphone jack take the audio signal before it hits the main audio amp? I wish I had a set of circuit diagrams. Jerry K8RA ======= Email scanned by PC Tools - No viruses or spyware found. (Email Guard: 7.0.0.18, Virus/Spyware Database: 6.15660) http://www.pctools.com/ ======= ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
