On 8/28/07, Geoff/W5OMR <[EMAIL PROTECTED]> wrote: > Does anyone else have another other suggestions on how to silence a > modulation transformer?
Geoff - The usual remedy of mounting it on thick, stiff rubber can help along with tightening the tie bolts. I've also heard of guys baking them in the oven to soften the tar or shellac, then re-tightening everything while it's soft. Not sure how the expansion/contraction issue would apply here. Seems it would shrink up a bit as it cooled off? Maybe Gary will jump in here later with his recipe for success. IIRC, he told me it's all in the amount of vacuum you pull on the unit to impregnate it well with shellac. The laminations on my busted iron look bullet-proof, to the point that the broken frame shifted away from them slightly from the impact. I think he's had very good success with curing talk-back, but then again - he's not mass producing or cutting corners. He gives each piece of iron his full attention, and does it right. No shortcuts. He took photos of the many steps involved and sent them to me as he reworked my transformer. First rate. And yes - we are indeed fortunate for guys like Gary. I have a spare mod reactor out of my BC transmitter that will be going home with him at NEAR-Fest in October. Barry let all the tar out. ~ Todd, KA1KAQ ______________________________________________________________ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio 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.
