[EMAIL PROTECTED] writes: > So what you are saying is that the total voltage across the 4 K resistor > load was 5 x 200 or 1 kV rms audio? I assume you drove it midband (1 Khz or > 400 > Hz etc).
That's correct. > If you have a good HV scope probe, you should look at the plates of the > modulator 833s and see that both have substantial swing, before you blame > that > iron. I don't have a high-voltage scope probe, just a HV multiplier for a multimeter Maybe that could be made to work. > You've probably been there already, but don't these rigs have a switchable > attenuator in the input somewhere, for when they go to nighttime 250 watt > power level? Is it possible that this is in the wrong mode? I've tried it both ways. And in any case, I can drive the rig with as much audio as it needs,even with full pad on the input, and the plates of the 833s are glowing out of control before I get more than 20% modulation. > I had an RCA transformer that i gave away two years ago. Let me know if you > need something like that, because I might find it again from the guy who > took it away. Thank you. Today I borrowed a mod transfomer to try as soon as it has had a chance to dry out a bit after coming in from the cold. I think it is from a Gates BC-1F. It is for push-pull 833s into a 5000 ohm PA load. It doesn't have the driver mod winding, but I'm glad to get something to try. If I recall correctly, in the RCA line a transformer from an RCA BTA-500MX or -1MX would be a good choice for my rig. ************************************** AOL now offers free email to everyone. Find out more about what's free from AOL at http://www.aol.com. ______________________________________________________________ AMRadio mailing list 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.
