Good progress on my Gates BC-1T this evening... A friend at work loaned me a really big modulation transformer that may be from a Gates 1F. It say it is intended for two 833s into a 5k PA load. It doesn't have the driver winding, but even so I gave it a try...
Eureka! Finally - I get to see and hear normal AM performance from this rig. The modulation is quite good with the temporary transformer. I see that it gets a little lopsided pos/neg at high power and high mod percentage - that probably due to it being starved for drive without the extra kick of the driver modulation winding, but now we know with certainty that it was the transformer that was the trouble. Now to figure out how to find a replacement transformer that will physically fit into the cabinet - I can't run it long-term with this transformer sitting in the open beside it or I'll have some dead pets. Hopefully I can come up with one that has the driver winding as well - or maybe I can do that a different way. Steve WD8DAS ************************************** 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:[email protected] To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
