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Title: WTD: 500 W Amp info 1948 Handbook Post by: Carl WA1KPD on July 09, 2012, 10:23:09 PM Saw an 813 amp on EBay recently which references schematics that look like ARRL work, The seller also referred to it as a 1948 amp. Nothing comes up in a QST search and you can see a chapter heading so sure looks like a Handbook article.
It is titled "A 500 Watt Beam Tube Amplifier" I don't have that year in my collection and would like to get a copy of the article, or buy a Handbook if it is in there. Thanks and 73 Carl /KPD Title: Re: WTD: 500 W Amp info 1948 Handbook Post by: ae7db on July 09, 2012, 11:59:19 PM I think that looks like the amplifier from QST of February 1947, p.23 If you have access to the QST archives you might check to see.
73, Dean Title: Re: WTD: 500 W Amp info 1948 Handbook Post by: K0VGD on July 10, 2012, 09:58:24 AM Carl,
It's the 48 ARRL Handbook, I can scan it for you. 73, Bob/K0VGD Title: Re: WTD: 500 W Amp info 1948 Handbook Post by: Carl WA1KPD on July 10, 2012, 10:40:17 PM Dean- Got it on line- Thanks
Bob- Appreciate the offer very much but I am all set What a great resource this board is! :D Carl /KPD Title: Re: WTD: 500 W Amp info 1948 Handbook Post by: KM1H on July 11, 2012, 01:19:07 PM Most HB feature articles are from an earlier QST and the HB version is often condensed and almost always doesnt include corrections and revisions.
Carl Title: Re: WTD: 500 W Amp info 1948 Handbook Post by: KB5MD on July 13, 2012, 09:30:20 AM There is a 47 handbook on ebay now.
Title: Re: WTD: 500 W Amp info 1948 Handbook Post by: KM1H on July 27, 2012, 01:38:53 PM Its NOT in the 47 ARRL, it IS in the 48 starting on Pg 207. AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
The 47 does have a cute 7C5, 7C5, 4D32 rig. Carl |