[AMRadio] would like to build a little homebrew project


crawfish crawfish at surfmore.net
Wed Aug 1 22:50:31 EDT 2007


I will send a snail-mail copy this weekend.
                                                               Joe W4AAB
----- Original Message -----
From: "Michael Mertes" <fnerks1 at yahoo.com>
To: "Discussion of AM Radio in the Amateur Service"
<amradio at mailman.qth.net>
Sent: Wednesday, August 01, 2007 2:47 PM
Subject: Re: [AMRadio] would like to build a little homebrew project


> I would like to have a copy of that article; for I
> found an old homebrew transmitter recently that uses a
> pair of 807s to modulate an 814. It needs a complete
> rebuild, and I have not put power to it yet. The bad
> news is that looks like it has been sitting in a barn
> for the last 30+ years. The 814 has a rated plate
> dissipation of 65 watts (is cheap and plentiful) and
> will fit in an 811 socket... or so I hear. The
> modulation transformer looks like it came out of an
> ARC-5. I suspect that this transmitter may have been
> built from a handbook article, but I don't have a HB
> that old.
>
> Any thoughts?
>
> Mike /kz5m
>
>
> --- crawfish <crawfish at surfmore.net> wrote:
>
> > I just received a copy of the 12th Radio
> > handbook(1949). After WWII, 160m
> > was given to LORAN for the most part, and you had to
> > go to the pre-war Radio
> > Handbooks to find amps for 160m.In recent days on
> > this reflector, use of
> > 4-65's were discussed. A 200 watt input amp using a
> > 4-65 modulated by a pair
> > of 807's is shown(it is actually a complete
> > transmitter). Of course, this is
> > 80-10m.Lots of good stuff in the old RADIO
> > Handbooks. I have a pair of
> > HK254's I want to use on 160m.I have an article for
> > an 80-10m version in the
> > 12th edition.
> >
> >                    Joe
> > W4AAB
> >
>
>
>
>
>
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