All,
If you look around these sites you will find VHF amplifiers using these tubes.
One
is a commercial builder in europe. See mid power list.
http://www.pollak.sulinet.hu/elektro/pa_rev/pa_rev.htm#mid_vhf
http://www.westparknet.com/business/ham%20shop/GI46Bamp.htm
http://www.qsl.net/ok2zi/pa432.html
Art
KN7WW
> Bob the advertisement says the GI-46b is a variant on the GI-7b. But
> its interesting to read the description of the GI-6B, particularly the
> transfer capacitance (http://nd2x.net/gi6b.html). Lets compare transfer
> capacitance
>
> GI-6B 0.25 pf wires from cathode to anode to make it oscillate
> GI-7b 0.075 pf good to microwave frequencies
> GI-46B 5.1 pf wow
> (http://www.tubes.ru/techinfo/TransmittingPulseTubes/gi-46b.html)
>
> So it look to me like they used the tube as a power oscillator in
> UHF/microwave application and include extra transfer capacitance to
> simplify the external cavity design.
>
> I belive the statement that the tube is the last generation of small
> triode and it's the most advanced design. But its not suitable for UHF
> and probably not for VHF. But in an HF amplifier in Grounded Grid, it
> works fine.
>
> jeff, wa1hco
>
> Bob Bruno - K2KI wrote:
>
> >Are there any examples of an amp that has been built using the GI-46B tube.
> >I see a guy on eBay selling them rather cheap I think.
> >Anything that I should know about this tube that might steer me away from
> >getting one?
> >
> >
> >73, CUL
> >
> >Bob Bruno - K2KI
> >k2ki@starc,org
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> >
> >
> >
>
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