[AMPS] Re: Storing/Operating Tubes Horizontally

[km1h @ juno.com]

On Mon, 24 Nov 1997 20:54:43 -0600 philk5pc@connect.net (Phil Clements)
writes:
>>Carl said:
>>Altho not mentioned by you earlier, never store a 3-500Z on its 
>>side for any length of time. 
>
>Rich said:
>>>Is there such a statement from Eimac, Carl?
>
>>Yup
>
>>>It does not seem be in the 3-500Z spec. sheet.
> 
>>No, it is not. It was in a form letter sent back to those who sent 
>>tubes in for replacement. I sold Eimac tubes 1986-91.
>>I also believe it was published in one of the rags by Bill 
>>Orr....maybe.
>
>>>I don't buy it.  With incandescent tungsten, yes, with cold 
>tungsten, 
>>>not.  At room temperature tungsten is extraordinarily rigid.  
>
>I was always told the reason most glass Eimac tubes and later post/RCA
>811A's cannot be stored or operated horizontally has nothing to do 
>with
>the filament. It is the strength of the material that holds the other
>tube elements in place that will eventually loose the battle to 
>gravity.
>Dropping one of these type tubes on its side during shipment can also
>speed up the process of causing misalignment of the elements.
>
>(((73)))
>Phil, K5PC


I never said it was filament related...ur buddy Rich just went off and
assumed that.
Not much different than other noise on this reflector recently. 

Carl KM1H



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