Thanks all,
Alek Petkovic wrote:
> GU81M
> http://www.nd2x.net/ur4ll/GU81M.jpg
It was the GU81. I had forgotten about the grid connection on top.
>
> Available at http://www.nd2x.net/ur4ll.html
Fairly reasonable, but there's probably not much demand for a glass
bottle that big or in that configuration any more. I wonder how high in
the HF range it'll go.
>
> Or maybe it was the GK71 http://www.nd2x.net/ur4ll/GK71.jpg
> Available from the same source.
I didn't remember the GK71 being that tall either.
I see he has new 813's for $25 USD and I have a project underway using them.
I had looked at his page at least three times as I was sure that was
here I had seen the tube I was looking for, but for some reason I kept
missing it.
73
Roger (K8RI)
>
> 73, Alek. VK6APK
>
> At 03:25 PM 8/03/2010, Roger wrote:
>> A while back I saw a surplus glass Russian tube that resembled an 813 on
>> steroids. It was claimed to run a KW without requiring forced air. I've
>> seen glass tetrodes that are supposed to go a KW and resemble the
>> 4-1000A, but that's not it. IIRC the plate resembled an 833 as to shape,
>> but the tube is round and long like an 813 although it runs considerably
>> more power. The socket appeared to be a "twist lok" type. It was
>> relatively inexpensive, but a great one for those "glow in the dark"
>> projects. They even had sockets listed, but try as I might, I've not
>> been able to find the site or tube. BTW the I remember the site had both
>> tubes and sockets.
>>
>> Any thoughts? Any ideas as to what tube? What site?
>>
>> Thanks,
>>
>>
>> Roger (K8RI)
>> _______________________________________________
>> Amps mailing list
>> Amps@contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
>
>
> http://www.qrz.com/db/vk6apk
> http://www.qrz.com/db/vk6py
>
>
>
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