[Amps] Tube Identification

[John Irwin]

Hi
Suggest you put your mark on the tube somewhere obvious and also somewhere not so noticeable.  Perhaps the  top of plate cap maybe or marker on the glass with a marker. It Will prevent switching tubes also.  A small  X on the metal surface will suffice. take a picture of the mark or have someone witness the mark.  Be sure to mention on the listing that tubes are marked.  We mark units at work to prevent tampering with inside by customers.  The tech super glued a screw in.  Client broke it off voiding warranty.  Comes out easily with soldering iron heated for 30 seconds.
 
john kb9tc
 
George Cortez <ne2i at optonline.net> wrote:
George KB2Z wrote:

>Morning all,
>I have a pair of Eimac 3-500 tubes I would like to sell and would 
>like suggestions for identifying them.
>They are putting out over a 1000W cw. I dont want to sell them to 
>have an un-ethical person send back as bad, saying they are no good.
>I sold a new tested pair of tubes a few years back and had that 
>pulled on me. Once bitten, twice shy.
>Thanks in advance, George KB2Z
>
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>
maybe use an etching tool at the top of the anode connector? or at the 
top of one of the pins
anything like a permanent marker could be wiped off.
perhaps a little bit of enamel nail polish ( they come in weird colors 
that cannot be duplicated easily)
at the bottom of the tube or something.....
Anyone have any other ideas?

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