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Re: tubes
Tesla List wrote:
>
> Original Poster: "Reinhard Walter Buchner" <rw.buchner@verbund.net>
>
> Hi Ed, all,
>
> > Original Poster: "Ed Phillips" <evp@pacbell.net>
> snip
> > There were an almost infinite number of UV203A and VT4-C triodes
> > available surplus after WW2, and there are probably a lot still
> >kicking around somewhere. Nominal 50 watt dissipation, filament
> >3.25 amps at 10 volts. I suspect two or more in parallel would give
> >quite respectable performance.
>
> Uhm, I wouldn´t use a VT-4C or GL-211 (same tube, except that
> the VT-4C has military specs and is maybe more robust) for pure
> experimental work. The last time I saw one of these on the internet,
> they (a company) wanted $550 for one in original packing, mint
> condition and only 15 hours run time. I just happen to have one of
> these in the same condition with zero hours runtime. Hehehe ;o).
This note was apparently way out of date. I just looked at Fair Radio
Sales for VT4-C and they had NIB for "only" $100.00. I have several NIB
which I bought for $2.00 about 1952 and, somewhere, some ones with
corroded bases which were $0.50 each. Different times, different
prices.
Ed