[Drakelist] AN-5 antenna
Good evening to the group - Does anyone have a Drake AN-5 antenna for a SPR4 they'd like to sell? If so, my email is hamil...@nwi.net 73 Terry Hamilton K7WLD Wenatchee, WA ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] Dials, etc.
I know this won't work for some but a friend of mine had a Crosley that he wanted a speedometer like the original. He took a picture and took it to a local printer who made a clear copy with sticky back that he glued attached to the metal of a replacement speedo and it looked just like the real thing. No silkscreen charges. 73, Paul W4YRL ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] unstable R4C PTO
Hi Gang, Thanks for all the replies to my past message, but at this point in time, I'm even more dumbfounded than ever. So far I have cleaned, and oiled the mechanical parts, installed a ground strap on the PTO, resoldered all the ground wires inside. everything is free, and working as it should. Also, I drilled another hole in the cover to stretch that angled spring giving more tension. No avail, now I think it must be an electronic problem, as sometimes, when I try to tune a station, it warbles, sometimes while I am just listening hands off. vibration doesn't seem to change anything. Someone emailed me suggesting the zenner diode could be the culprit. I always thought most solid state devices either work, or don't work. Is it possible that's the problem, or could it be somewhere else outside the PTO? Thanks for reading thisTom, WD8JPP ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] unstable R4C PTO
Zener diodes can develop an instability in their voltage knee value due to migration of mobile charge at the surface of the semiconductor. A random walk of a few tens or hundreds of mV could produce your frequency problem. Put a scope probe on the zener and set your scrope for high sensitivity. See if you observe a jumpy voltage. Dennis AE6C On Mon, Aug 23, 2010 at 6:37 PM, pony...@aol.com wrote: Hi Gang, Thanks for all the replies to my past message, but at this point in time, I'm even more dumbfounded than ever. So far I have cleaned, and oiled the mechanical parts, installed a ground strap on the PTO, resoldered all the ground wires inside. everything is free, and working as it should. Also, I drilled another hole in the cover to stretch that angled spring giving more tension. No avail, now I think it must be an electronic problem, as sometimes, when I try to tune a station, it warbles, sometimes while I am just listening hands off. vibration doesn't seem to change anything. Someone emailed me suggesting the zenner diode could be the culprit. I always thought most solid state devices either work, or don't work. Is it possible that's the problem, or could it be somewhere else outside the PTO? Thanks for reading thisTom, WD8JPP ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
