[AMRadio] 4-65's


gkb gkbrown at gwi.net
Thu Apr 5 06:17:04 EDT 2007


Geoff:
    I mite have three of these 4-65's. Will check and let you know.
Regards,
Gary...WZ1M
----- Original Message ----- 
From: "Geoff/W5OMR" <ars.w5omr at gmail.com>
To: "Discussion of AM Radio" <amradio at mailman.qth.net>
Sent: Wednesday, April 04, 2007 8:34 PM
Subject: [AMRadio] 4-65's


> Does anyone have any 4-65's?
>
> I think that'd be a neat little ~100w rig to build up.. a single 4-65
> tetrode, modulated by a pair.
>
> Of course, I'll need a screen winding on the modulation transformer to
> modulate the screen of the final, a bit...
> hmmmm... I think I have an ol' buzzard RCA 1:1 5000 ohm, 200mA mod xfmr
> around here, with a screen winding on it, I could use...
>
> 6.3v @ 3.5a?  Got those transformers, too.
>
> Oh, I guess I'll need sockets... got a plate choke, can make some plate
> caps... got plenty of air variable caps and a variable coil for a PI-L
> network...
>
> hmmm, yeah - sounds like it'll work great!
>
> Ok.. who's got parts?
>
> --
> 73 = Best Regards,
> -Geoff/W5OMR
>
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