"last call"
I have what looks like 4 or 5, a couple are in the
Yellow eimac boxes. I would like to see someone take them
for just the cost of shipping.
I know UPS charges are high but ...
If not, at the end of May they will be tossed in the dumpster.
pictures:
http://petelancashire.com/gallery/main.php?g2_itemId=7369
-pete
> Several years ago I bought a few surplus Y-448 tubes made by National.
> They
> were close to my standard 4-1000A`s in performance at HF,however,the
> filaments drew around 30 amps (per tube) as compared to the 4-1000A `s 21
> amps.I ran a pair at 7kv and they played exceedingly well on 80
> meters...As
> I recall,the plate structure was also more robust than an Eimac
> 4-1000A..Jim..K7RDX..
> ----- Original Message -----
> From: "John Lyles" <jtml@losalamos.com>
> To: <amps@contesting.com>
> Sent: Wednesday, April 01, 2009 7:05 PM
> Subject: [Amps] Can someone ID this tube and its use ?
>
>
>> >From the photos, it looked like the glass was stained brown. Is this
>> the
>> >case or just the camera/lighting? If so, then it is probably a tube
>> that
>> >(like 4PR1000) ran very high voltage, and the darkening is from
>> >continuous Xray bombardment. It would have run under oil in that
>> >condition, most likely. Is there any scent of oil or residue under the
>> >base?
>>
>> Jim Tonne, are you sure about Tom Yingst? He was at RCA/Lancaster for
>> years during the development of many tubes, but I thought his tenure at
>> Eimac was shorter and that the Y designations preceeded him there. There
>> were plenty of Y numbers for their developmental and special tubes that
>> were for sole use by a particular customer also.
>> 73
>>
>>
>> John
>> K5PRO
>>
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>
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