[AMRadio] Bad news on BC1-J

[WA5SVL]

Dan these are all out of Collins V-2 and V-3, 4-400 modulators, input is 100ohms
and output is 100 ohms, Dudley

Dan Hall wrote:

> Dudley:
> Curiously neither the manual or the transformer reveal anything about the
> ratio or impedances. The tubes are 833As modulating 833As. A pair each,
> though I am running just one in the PA.
>
> Dan
> ----- Original Message -----
> From: "WA5SVL" <kdud1 at pdq.net>
> To: <amradio at mailman.qth.net>
> Sent: Wednesday, March 20, 2002 9:57 AM
> Subject: Re: [AMRadio] Bad news on BC1-J
>
> > Hello let me know what the primary and sec resitance are I have a couple
> of I kw mod
> > transformers , and what tubes you are running, WA5SVL
> >
> > wwd at netheaven.com wrote:
> >
> > > Dan,
> > >
> > > Are you sure it really is a mod xfmr? Maybe a power xfmr pressed into
> mod
> > > duty?? It has happened more than once and they can function failry well.
> > > Your description of seems odd, though.
> > >
> > > In <002c01c1cfdb$19c653e0$47190242 at K6BW>, on 03/19/2002
> > >    at 10:47 PM, "Bill Smith" <billsmith at ispwest.com> said:
> > >
> > > >Dan, big transformers like that don't open very often, they usually
> > > >develop a short between turns.  I'd look very carefully at the
> terminals
> > > >to see if you can find a broken wire on the outside of the core.
> > >
> > > >Here's hoping!
> > >
> > > >73 de Bill, AB6MT
> > > >billsmith at ispwest.com
> > >
> > > >----- Original Message -----
> > > >From: "Dan Hall" <kj7fx at tdn.com>
> > > >To: <amradio at mailman.qth.net>
> > > >Sent: Tuesday, March 19, 2002 5:58 PM
> > > >Subject: [AMRadio] Bad news on BC1-J
> > >
> > > >> Well Folks:
> > > >> A couple of years of on and off labor (several hundred hours) ,
> several
> > > >> hundred dollars, and lots of hopes.  My modulation transformer is
> open on
> > > >> the secondary side. No wonder the tubes acted like they were doing
> their
> > > >> jobs. It just wasn't getting through to the other side.
> > > >>
> > > >> I'm parting it out. I'm done.
> > > >>
> > > >>
> > > >> Dan
> > > >> KJ7FX
> > >
> > > Bill    N2KQA
> > > --
> >
> > --------------------------------------------------------------------------
> ------------
> > > wwd at netheaven.com  To the warriors go the spoils of war; to the hindmost
> .  .  the surplus.
> >
> > --------------------------------------------------------------------------
> ------------
> > >
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