----- Original Message ---- From: jeremy-ca <[EMAIL PROTECTED]>
If the 20A is running them too hot then I'd check out the circuit for something causing excessive current drain. I used a 20A decades ago and never had that problem. Carl KM1H Reply by Jim WD5JKO: Carl decades ago the line voltage was closer to 110-115 vac whereas now it is closer to 125 vac. A stock 20a plugged into todays AC mains will literally "cook" the tubes. Sure a variac is the right choice here, but the poor 6u8A is still the weak link. The 6MU8 is just a beefier alternative. Regards, Jim JKO ______________________________________________________________ Our Main Website: http://www.amfone.net 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.