> Hi all, I aquired one of these amps before I moved from NC. I haven't even
> put it on the air yet. I plan to install a soft start and replace the
> rectifier diode first. Mine has the original 3-400z tubes in it and I saw it
> with 1350+ PEP before I bought it. It's a neat looking classic amp that
> appears to be so basic that there is room for a lot of mods. Waht if any
> have you other owners or past owners done?
> Thanks,
> Cam
> WA4JKW
>
I built one of these from a kit for the W9BGX Northwestern University
club station in about 1966. In the remaining time I was there, we only
had a couple of problems with it. The output started dropping off and I
found the solder connections on the filament choke assembly were bad.
This was a pre-built assembly, the choke and some lugs and a mounting
bracket, not something that had been soldered in building the kit. After
re-soldering the lugs, the amp put out more power than it had when it
was new. I also had to re-solder the filament pins on at least one of
the tubes. I think I remember that it had gone completely open.
In 1968, I operated some contests from the QTH of W9EXE, now W9RX, who
also had a Bandit 2000C. He had added some brackets between the front
panel and the case in an attempt to solve some TVI problems, because the
original design was far from RF-tight. It wasn't pretty, but apparently
it worked. At the end of one of the contest weekends, there was a big
run of JAs on 10M, and by the time it ended you could smell the hot
plate transformer all over the house. The amp survived, but clearly I
had been pushing it to its duty-cycle limit.
73,
John, K9MM
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