So I can't say this project was nipped in the bud. More like pulled halfway from the grave before letting it slide back in?
Maybe not that bad, but this amplifier was built with a 4-1000A glass tube. They had gotten particularly expensive ten years ago when this thing ended up in my lap. Never mind how. It needed a new tube and a new socket, both. Back then the YC-156 high-gain triode was still not terribly expensive if you scored a pullout. Pullout tubes tended to have thousands of hours of good service still in them when removed from MRI scanners for preventative maintenance.
Ten years later they're not so plentiful. The medical scanning technology has gone solid-state, or so I'm told.
The project to convert this homebrew amplifier to the YC tube looked economically viable when I assigned it to a young employee. Then he went on a camping trip to the Clifford Pinchot national forest. On the opposite side of the continent, more or less.
He hasn't been heard from since 2016.
By anyone.
I lost all interest in completing this project. The four foot-tall BUD rack cabinet has to go, along with this tube and the RF deck that goes into it.
And no, you can't hire me to finish it. It was intended to keep it and use. I have acquired a Drake amplifier that serves this need in the meantime. That's plenty large enough for my purposes. It just needs to go.
Somewhere.
Else.
Yes, local pickup only. No way on earth I'll try to ship this thing.
Seems inevitable someone will ask "how much for just the tube?"
Here's the deal. 1200 bucks for the whole package, incomplete project, cabinet and tube.
But for just the tube alone? 2200 bucks. Yeah, the box-lot strategy. Box of books, five bucks. Any single book from it, 20 bucks.
We have tested the tube in two different customers' amplifiers in the since I acquired it. Showed 4000 Watt peaks with 100 Watts peak drive at 5000 Volts on the anode. Never pushed it harder than that. No guarantees. I just don't want it back.
Took me forever to extract these two pieces from under other stuff. The cabinet will see daylight and get photographed in a few days, barring distractions.
I really need the room. I'll post pics of the cabinet when it's out in the open.
I'll post it in the proper 'for sale' section when it's real. Until then, it's just a rumor with pictures.
73
Maybe not that bad, but this amplifier was built with a 4-1000A glass tube. They had gotten particularly expensive ten years ago when this thing ended up in my lap. Never mind how. It needed a new tube and a new socket, both. Back then the YC-156 high-gain triode was still not terribly expensive if you scored a pullout. Pullout tubes tended to have thousands of hours of good service still in them when removed from MRI scanners for preventative maintenance.
Ten years later they're not so plentiful. The medical scanning technology has gone solid-state, or so I'm told.
The project to convert this homebrew amplifier to the YC tube looked economically viable when I assigned it to a young employee. Then he went on a camping trip to the Clifford Pinchot national forest. On the opposite side of the continent, more or less.
He hasn't been heard from since 2016.
By anyone.
I lost all interest in completing this project. The four foot-tall BUD rack cabinet has to go, along with this tube and the RF deck that goes into it.
And no, you can't hire me to finish it. It was intended to keep it and use. I have acquired a Drake amplifier that serves this need in the meantime. That's plenty large enough for my purposes. It just needs to go.
Somewhere.
Else.
Yes, local pickup only. No way on earth I'll try to ship this thing.
Seems inevitable someone will ask "how much for just the tube?"
Here's the deal. 1200 bucks for the whole package, incomplete project, cabinet and tube.
But for just the tube alone? 2200 bucks. Yeah, the box-lot strategy. Box of books, five bucks. Any single book from it, 20 bucks.
We have tested the tube in two different customers' amplifiers in the since I acquired it. Showed 4000 Watt peaks with 100 Watts peak drive at 5000 Volts on the anode. Never pushed it harder than that. No guarantees. I just don't want it back.
Took me forever to extract these two pieces from under other stuff. The cabinet will see daylight and get photographed in a few days, barring distractions.
I really need the room. I'll post pics of the cabinet when it's out in the open.
I'll post it in the proper 'for sale' section when it's real. Until then, it's just a rumor with pictures.
73
