[AMRadio] You are right!!

[Dan Hall]

Bill:
I was just this minute looking through the manual!! Man, you are so right,
The secondary is two coils. This does not show on the main modulator
schematic. I think there is no way that it would have worked using the
connection numbers the main scheme calls out.  I am going to take some
readings on this thing and see if something  in the literature tells me how
to hook the darn thing up.

Wow.

By the way Dudley, I found the spec. sheet on the Mod transf. and will relay
the info to you if I need one.

Thanks guys
Dan
----- Original Message -----
From: "Bill Smith" <billsmith at ispwest.com>
To: <amradio at mailman.qth.net>
Sent: Wednesday, March 20, 2002 10:46 AM
Subject: Re: [AMRadio] Bad news on BC1-J Mod trans.


>
> Hi, Dan
>
> I looked up what I think is the mod transformer in the Peter Dahl catalog.
> Too bad about the replacement cost, but notice that there are apparently
two
> secondaries on the transformer.  Have you identified both secondaries?
(My
> apologies if this is too simple.)
>
> GATES BC-1 MOD TRANSFORMER
> P/N 478-0410-000
> CORE) A-0525/ C-CORE         STYLE #) 09  HIPERSIL C-CORE
>
> PR) 2450 VCT PP 833A'S
>
> S1) 1800 VAC @ 750 VA
> S2) 80/110/155 VAC @ 8 VA
>
> DM) HT = 10.625 WT =  7.375 DT =  6.750 MD =  4.750 MW =  5.750
> PRICE)    $995.00 Plus S&H FOB El Paso, TX    WEIGHT)   49  LBS
>
> 73 de Bill, AB6MT
> billsmith at ispwest.com
>
>
> ----- Original Message -----
> From: "Dan Hall" <kj7fx at tdn.com>
> To: <amradio at mailman.qth.net>
> Sent: Wednesday, March 20, 2002 10:23 AM
> Subject: Re: [AMRadio] Bad news on BC1-J Mod trans.
>
>
> > Bill:
> > I guess I first became convinced that it was a modulation transformer
when
> I
> > noticed the printing on the top of the thing that says; Gates Modulation
> > Transformer part # AM 30469E
> >
> > Sorry about the sarcasm, Bill
> >
> > Dan
> > ----- Original Message -----
> > From: <wwd at netheaven.com>
> > To: <amradio at mailman.qth.net>
> > Sent: Wednesday, March 20, 2002 9:51 AM
> > Subject: Re: [AMRadio] Bad news on BC1-J
> >
> >
> > > 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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