Thanks Todd. I think I'll give JB Weld a shot. I'm not real sure the tube (810) has much life in it, so I won't spend too much time and money on it. I'm sure you're right, the expansion and shrinking will be a big factor in how well it holds. Since it is used widely on engine blocks I guess that would speak well of its ability to withstand the variations pretty well.
Thanks again to all for your responses and advice. 73, Rick/K5IAR Rick, it's been a while for me, but the main issue I recall was expansion/contraction, with the envelope heating or cooling at a rate that the glue couldn't match, resulting in cracked tube or broken seal. It's been a long time though, so I really don't recall the particulars. JB Weld is used on engines and other high temp applications as mentioned, so it would probably be fine. I run 810s as modulators and they do get hot, but I doubt it would be an issue. Sometime somewhere, YEARS ago, I had the formula used by RCA for this purpose. Maybe I'll find it during the move? Good luck - ~ 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.
