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" <[EMAIL PROTECTED]> To: "'Discussion of AM Radio'" <amradio@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: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] 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" <[EMAIL PROTECTED]> > To: <amradio@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" > > <[EMAIL PROTECTED]> 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. > > > > ________________________________________________________________ > > Speed up your surfing with Juno SpeedBand. > > Now includes pop-up blocker! > > Only $14.95/ month - visit http://www.juno.com/surf to sign up today! > > ______________________________________________________________ > > AMRadio mailing list > > Home: http://mailman.qth.net/mailman/listinfo/amradio > > Help: http://mailman.qth.net/mmfaq.html > > Post: mailto:AMRadio@mailman.qth.net > > > ______________________________________________________________ > AMRadio mailing list > Home: http://mailman.qth.net/mailman/listinfo/amradio > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:AMRadio@mailman.qth.net > > ______________________________________________________________ > AMRadio mailing list > Home: http://mailman.qth.net/mailman/listinfo/amradio > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:AMRadio@mailman.qth.net >
