[Amps] GONE: Re: Can someone ID this tube and its use ? Y-448

[Pete Lancashire]

They have found a good home vs. the dumpster

-pete

> "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 at losalamos.com>
>> To: <amps at 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
>>>
>>> _______________________________________________
>>> Amps mailing list
>>> Amps at contesting.com
>>> http://lists.contesting.com/mailman/listinfo/amps
>>
>>
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