|[AMRadio] Ferroresonant transformer revisited|
w5omr at satx.rr.com
Wed May 10 13:04:37 EDT 2006
Rick Brashear wrote:
> No doubt, they are noisy rascals, hot too. Geoff, I'm glad you
> mentioned 450TL. I have one I acquired with an old BC-610 someone had
> hacked up trying to make an amplifier. Is there a way to test more
> than the filament other than putting it in a working amplifier? I'd
> kind of like to build something around it, but would hate to get it
> all complete only to find the tube was too weak or dead.
Other than testing the filaments, no - I don't know of a way other than
comparing it in an amp designed to use 'em.
Speaking of which, Rick... I've got an amp that someone started to
home-brew, designed around a 450T. Filament is 220v primary, at 7.5v
big peice of copper tubing for a coil, tapped for 80, 40, 20 and 10m.
And, I have a brighly glowing 450TL to go along with it.
If you're interested, I'll send some pictures of it.
73 = Best Regards,
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