[Boatanchors] Anyone remember Tubesters?

[Steve Uhrig]

Hi all,

Back a good many years ago, I bought a Collins S line pair from a friend. 
It was in good shape, I used it and loved it, and regret getting rid of 
it.

In place of many or most of the vacuum tubes were plastic solid state 
assemblies called 'Tubesters". These were approx the same size of the 
tube they were to replace, and had pins on a standard base, so you could 
just plug them in and they worked.

I had the receiver tunes to a gnat's behind before putting the Tubesters 
back in. It tuned easily and was a typical Collins tuneup.

I then put the Tubesters back in, ran another alignment and found 
essentially no change. The thing worked fine with those Tubesters.

I'm just wondering what the story was on them? I don't recall ever seeing 
a mention of them in any way before or since.

Can anyone shed any light on these things, and comments?

Tks .... Steve WA3SWS


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Steve Uhrig, SWS Security, Maryland (USA)
Mfrs of electronic surveillance equip
mailto:Steve at swssec.com  website http://www.swssec.com
Tel/fax +1+410-879-4035
"In God we trust, all others we monitor"
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