[TenTec] 262M VOX Teckie Question

[Michael O. Hyder]

Hi Mike--

Don't know about the delay circuit, but those units were notorious for
problems caused by RF getting into the VOX circuitry.  Seems they were not
designed to work in an RF environment?

Luck to you!  de Mike N4NT@wireco.net

----- Original Message -----
From: Mike Souhrada <wb9iog@revealed.net>
To: <tentec@contesting.com>
Sent: Monday, June 07, 1999 1:24 PM
Subject: [TenTec] 262M VOX Teckie Question


>
> I picked this up a few months ago anticipating finding a Triton
> unit with out the P/S. Seems to be common to sell gear today
> w/o one.
> It was sold as not working-no surprise-took just a few components
> and the DC is there in spades. I had a similar problem with the
> 252G last year so -been there done that.
>
> BUT-the VOX part doesn't work. Fortunately I acquired one that does
> work but the schematic details and the identification of ANYTHING
> on the board is miniscule-read (no identification).
> After much head scratching I discovered there is no oscillation
> in the delay circuit which appears dead. There are only a few
> parts in the circuit-glad I have a scope to see the timing.
>
> Now the question-is there a weakness in that delay circuit
> design? If you've repaired one what was the fault? I suspect
> the UJT  may be it but am not sure; with out any reference
> voltages in the schematic it makes it difficult to repair.
> TNX for any suggestions from those who have -been there done that.
> Mike
> Le Claire, Iowa



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