[AMRadio] 813 tx


CHRIS PAPAIOANNOU amateur at ipnet.gr
Thu Oct 28 13:36:23 EDT 2004


Legendary tube!About 20-25 yrs ago saw a rack mount homebrew 813 rig in a
fellow's house..p.s and tx in different pi aluminium chassis one above the
other...6L6 the oscillator tube,an 807 like buffer and 2 of those 813
"babes"in parallel like p.a
The p.a tubes were fed with 1200V on plate,was using an 100 W
modulator-amp,and had a long wire about 300 feet long...
I still remember it after all this time gone..
Btw saw a ham from AZ today morning while was searching in the intrnet who
has used the tube self-oscillated.A well homebrew rig..and a surprise for me
who have never seen this tube working in this way be4.
73,Chris,SV1DAF.
----- Original Message -----
From: "George Pritchard" <gpritchard at comtechpst.com>
To: "'Discussion of AM Radio'" <amradio at mailman.qth.net>
Sent: Thursday, October 28, 2004 5:45 PM
Subject: RE: [AMRadio] 813 tx


> I had one of those rigs as a kid BEFORE I WAS A HAM. I used it on CB
> modulated with 811A's. Then I found out about Amateur Radio. A backwards
> experience. Years later I parted it out, unknowing it was so well
> documented. I actually traced that thing out and drew the schematic at 16
> years old. The rig sat at the high school in a corner for years... The
> instructor gave it to me to male room at the end of June. I spent my
summer
> vacation that year on the CB band with that thing. Some of that rig is
here
> and there in the shack, sort of a ghost. When I saw it in the 1956
handbook
> I bought at a fest... I almost had tears. It WAS the one I had.
> George
> AB2KC
>
> -----Original Message-----
> From: amradio-bounces at mailman.qth.net
> [mailto:amradio-bounces at mailman.qth.net] On Behalf Of CHRIS PAPAIOANNOU
> Sent: Tuesday, October 26, 2004 5:02 AM
> To: Discussion of AM Radio
> Cc: peter A Markavage
> Subject: Re: [AMRadio] 813 tx
>
>
> tnx Pete..
> Chris,SV1DAF.
> ----- Original Message -----
> From: "peter A Markavage" <manualman at juno.com>
> To: <amradio at mailman.qth.net>
> Sent: Tuesday, October 26, 2004 9:02 AM
> Subject: Re: [AMRadio] 813 tx
>
>
> > Here's some:
> > http://www.amwindow.org/tech/htm/813/813.htm
> >
> > http://www.remote.arrl.org/tis/info/pdf/5401011.pdf
> >
> > http://www.remote.arrl.org/tis/info/pdf/5610033.pdf
> >
> > http://www.remote.arrl.org/tis/info/pdf/57hb192.pdf
> >
> > Doing a "Google" search on "813 transmitter" turned up 49 hits.
> >
> > Pete, wa2cwa
> >
> >
> > On Tue, 26 Oct 2004 06:44:32 +0300 "CHRIS  PAPAIOANNOU"
> > <amateur at ipnet.gr> writes:
> > > 73 to all group's members around,
> > > i'm new in this list.My name is Chris,my call is SV1DAF and i'm
> > > located in Athens,Greece.
> > > I'm not new in AM..20-25 years ago there was too much AM activity
> > > here,with homemade tube rigs,in the MW band.Was illegal but there
> > > was.Then most of the "amateurs"became hams with legal activity in
> > > the ham bands.The rest of them left the radiowaves.
> > > Not long ago i started homebrewing again after long time.My homebrew
> > > rigs now are:
> > > 1)6V6/807 crystal controlled where the 1st tube is the oscillator
> > > tube and the 2nd one the pa one.
> > > 2)6J5/EL34
> > > I prefer plate modulation and the reasons are known and clear,and
> > > i'm using an amp with 2 EL504s like output tubes.These are sweep
> > > tubes.
> > > I'm now searching for a tx drawing with an 813 tube like pa tube.Any
> > > replies will be too much appreciated.
> > > Tnx for the attention paid to my introduction,
> > > 73,Chris,SV1DAF.
> >
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