texasrf@aol.com wrote:
> A few of the VHF builders have removed part of the GS35B anode cooler to
> reduce the height. I have no idea how far one can go with this concept but it
> is mucho larger than an 8877 by comparison.
>
>
At 2.2 Kg or about 4 3/4# the GS-35B is a tad beefier than the 8877<:-))
and at just a tad over $100-$120 a lot less money. However IIRC they
are out of production. Remember the GS-35B can be mounted in any
position. Of course if that's inconvenient, there are always the
GU-84B/4CX-2500 and GU-78B or even the FU728F Tetrodes although a bit
more money and a more complicated circuit
73
Roger (K8RI).
> 73,
> Gerald K5GW
>
>
>
>
> In a message dated 12/16/2009 11:02:28 A.M. Central Standard Time,
> patriot121@msn.com writes:
>
>
>
>
>
>
>
>
>
>
> And thats why im going this route ...I have a Yokagawa P9306UL that i
> pressed into ameture radio service with only minor issues really. Then one
> of
> the 3-500Z (emiac lot from 87) started shorting to cathode after power up -
> now is constant - and needed replaced. The cost of 2 3-500z compared to one
> GS-35b leads to the thought of using a Russian tube. Seeing tht the GS-35b
> is almost one inch taller im not sure that i can fit it into the
> compartment that the pair of 3-500z were in. Probably some case cutting will
> be in
> order. I will get the calipers out and take some measurements.
>
> Other thoughts are using some Russian Tetrodes and just ground the screens
> ... might not work out - i read somewhere some time ago that this might be
> a way to go due to cost.
>
> Mike
> KC7NOA
>
>
>>
>> A lot of people here in Europe have built amps with the GS35B and I hear
>>
> reports of reliable operation with 4kv on the anode.
>
>>
>> As Richard alludes, we're experimenters and if things go *BANG*
>>
> occasionally it's no big deal, especially with $100 Russian tubes. I might
> find
> that the cost/benefit works out differently with a $1000 Eimac tube,
> though....
>
>> cheers
>>
>> Dave G0OIL
>>
>>
>
> SNIP
>
>
>> From: RICHARD GEORGE <k6kwq@msn.com>
>> Subject: Re: [Amps] Russian Power Tubes
>> To: dezrat1242@yahoo.com, "amps fourm" <amps@contesting.com>
>> Date: Wednesday, 16 December, 2009, 1:49
>>
>> Funny thing I worked as an engineer for 42 years.
>> This is ham radio not space shuttle engineereing.
>>
>> K6KWQ Dick
>> Amps by "MORE POWER"
>>
>
> SNIP
>
>
>>
>>
>> ORIGINAL MESSAGE:
>>
>> On Tue, 15 Dec 2009 13:03:33 -0800, "RICHARD GEORGE"
>>
> <k6kwq@msn.com<mailto:k6kwq@msn.com>> wrote:
>
>>
>> >
>> >The GS-35B will run for ever at 4KV with no problems. I have built
>>
> dozens of amps for VHF and UHF using this tube and running 4KV+ on the
> anode.
>
>
> SNIP
>
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