>
>Hi Richard: I lived in Dallas until 3 years ago. A number of years back
>there was a guy there who built and sold a number of linears using 8877
>tubes, All of the tubes were marked Mechanical Sample. He told me that
>he was trading TI calculators to someone at Eimac for the tubes. He
>worked at TI.
> My next door neighbor in Fairview was and I believe still is a sales
>engineer for Varian. When the sales office in Keystone Park, near TI
>closed, he worked out of his home. One day he asked me if I was
>interested in some tubes which went to him when the office closed. He
>gave me a new 8877 with chimney and socket, and a 3-500z which was
>stamped mechanical sample. Inside the box was a set of test data and a
>note saying the tube was OK. I believe many tubes are in existence
>marked mechanical sample which are good tubes. I have not used the 3-500
>but am pretty sure it is a new, first class tube.
// The Mechanical Sanples may have been tubes that were slightly out of
spec. but still worked well enough.
cheers, Dan
>
>> Richard wrote:
>>
>> All, need some help. I have a floor mount Harris amp, huge device but
>> it has served me well. It uses a 4cx1500 of which I have several. My
>> question is I have two 4cx1500A's that are brand new and marked
>> "Mechanical Sample" in the same "Red" screen as the words "Eimac
>> 4CX1500A".
>> Has anyone any knowledge of what these are? I am not going to put
>> them in the amp as I suspect they are dummy "Fitting type" tubes
>> produced for some reason.
>>
>> Any help would be appreciated, am I right about the dummy load, or
>> since they came from the Harris Factory are they good tubes?
>>
>> Thanks
>>
>> Richard
>> AC5YV
>
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>
>
- R. L. Measures, 805.386.3734, AG6K, www.vcnet.com/measures.
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