Re: [AMRadio] electricity and other musings
Heh, sorry about the randomly off-topic reply. It's been a while, I forgot that direct replies go directly to the list and not the individual. On 3/28/07, Jim Wilhite <[EMAIL PROTECTED]> wrote: Todd, what do you mean shorted windings. Are you talking about a transformer, or up top?? :>) Probably a little of both, Jim. (o: Was on 3885 with some of the guys two nights ago when the audio went away. Modulator cathode current meter was bouncing around like crazy, as if I'd bumped the gain, but no joy. Having just recapped the audio deck a month or so back due to a bias problem, it's looking and sounding like the mod tranny went west. Did some brief testing last night with Ed and the boys up north, seems they can hear me but audio is way down and I sound like I'm underwater/breaking up/in a world of s Serves me right for not going through it completely before putting it back on the air. Hope to get some time this weekend to tear into it. Ah, the joys of old gear. :D ~ Todd, KA1KAQ __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] electricity and other musings
Sorry to hear about all that Todd. Hope the fix is easy and you are full bore soon. Maybe a bias problem Hope so rather than the transformer. Good luck. And I always enjoy gigging you too. :>) 73 Jim W5JO Heh, sorry about the randomly off-topic reply. It's been a while, I forgot that direct replies go directly to the list and not the individual. __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] electricity and other musings
On 3/28/07, Jim Wilhite <[EMAIL PROTECTED]> wrote: And I always enjoy gigging you too. :>) Yea, yea, surekick the Yankee with the shorted mod transformer! I see how it is. (o: I actually went through the deck with the LV and audio circuits about a month ago, after a different problem that was bias-related. Replaced all the remaining electrolytic and wax/paper caps not done earlier, and one bad resistor. Checked the bias voltage on the 6B4 drivers and resting current on the 810 modulators last night. Everything was perfect, right where I left it after the repairs in February. Considering the syptoms, most agree that I have shorted turns in the mod iron, a known weak point of these beasts (it is 54 years old, after all). I have a spare in another rig, but not sure if it's any good either. Really wishing now that I'd grabbed the CVM-5 that Brett offered for sale here last fall. I'll get this transformer rewound, but in the meantime will find something a bit more stout to use. It might be a few days or weeks, but I'll be back on. You can't get rid of me that easily. :D ~ Todd, KA1KAQ __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
