[amsat-bb] Re: Winter Project

Nigel Gunn G8IFF/W8IFF nigel at ngunn.net
Thu Jan 7 08:55:44 PST 2010

Things like 6146 struggle on 10M.
You're expecting a lot getting it to go on 145MHz.
QQV06-40 or 2C39 are better bets for VHF.

On 07-Jan-10 16:28, wrb wrote:
> I would try to locate old QSTs or Amateur Radio Handbooks that contained
> such circuits. Tubes such as 6146, 829, etc. were good candidates. Also
> the 4x/4CX150 would give up to 100+ out with just a few watts in. Newer
> handbooks or magazines still provide you with he necessary theory to
> build one from scratch. Building a tube amp is quite simple, just need
> to have 300 - 1000 volts dc supply based on tube and power out. Also,
> usually a 6.3vc transformer for filaments. Nothing wrong with tube amps.
> I have an old Johnson 6n2 unit that runs about 150 watts. Neat old rig.
> Find an old rig as I mentioned above and go online to the various manual
> websites and obtain the manual for an old rig. You can use that as your
> example.
> Reid, W4UPD
> Douglas Anoman wrote:
>> I'm looking for a winter project can any one point me in the direction of a 2 meter tube amp nothing crazy about 25-50 out, 1-10 in. I have never used or played with a tube circuit so i thougt winter why not. Thanks 73
>> Thank You
>> Douglas Anoman
>> Amsat #37043
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Nigel A. Gunn,  1865 El Camino Drive, Xenia, OH 45385-1115, USA.  tel +1 937 825 5032
Amateur Radio G8IFF W8IFF (was KC8NHF),  e-mail nigel at ngunn.net       www  http://www.ngunn.net
Member of  ARRL, GQRP #11396, QRPARCI #11644, SOC #548,  Flying Pigs QRP Club International #385,
            Dayton ARA #2128, AMSAT-NA LM-1691,  AMSAT-UK 0182, MKARS,  ALC, GCARES, XWARN.

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