Quote:
Originally Posted by vortalexfan
Any tips or tricks for a first time user/owner of one of these Old Zenith T/Os?
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A word of caution when when running the radio on AC - never, ever pull a tube and re-insert it while the set is on. Since the filament string is fed from the B+ supply, the filter capacitor across the string charges up pretty high and can blow the whole string (unless the radio has been modded with a Zener across the string for protection).
Also, if the set uses a 1L6 tube, treat it like gold cuz it's nearly unobtainable and gawdawful expensive. For testing purposes, TO gurus often sub a 1R5 which is common and 'waay cheaper but lacks performance on the SW bands.