My GUESS would be, that this is an interesting home brew fabrication, but who knows??
There were a lot of CB amps built with 2/4/6 sweep tubes.? These days, it would cost a fair amount just for 6x 6JB6's :-)
John
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On Wed, Apr 17, 2024 at 11:33?AM jerry-KF6VB via <jerry=[email protected]> wrote:
On 2024-04-17 08:05, Dick wrote: > Anyone ever heard of this amp ? A Google search >? comes up empty. > >? It's listed on that Auction Site.
Interesting - 6 sweep tubes.? You'd need to gin up a power supply for it;? I'd guess 800V at a half amp or so + filaments.? The connector looks a little oddball; like an octal plug, only 11 pins.? I think SBE used similar on their amp.
? ?I'd expect it to struggle on 10M because of the interelectrode capacitances.? I once built a linear with 4 6LQ6 tubes.? 10M was not attainable, and the loading coil for 15M was like a half a turn.
? ?I have a Swan linear of similar vintage & design.? It also has 6 sweep tubes.? I got it for a song at the flea market, sans tubes.? I have replacement tubes, but a different type, and they take a different socket.? Amazon yielded up matching ceramic sockets.? That's in the forever queue of future projects.
? ?Back in the day, sweep tubes were cheap because they were made in the millions for TV sets.? That is no longer the case.
