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 KC9MLN KC9MLN@AMSAT.ORG Amsat #37043
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