[Premium-Rx] STC Marine 800 / Vigilant SR500

David Schofield davesc50 at tiscali.co.uk
Sun May 27 04:03:37 EDT 2012


Hi Chas and all the other list members,

I've just discovered that the STC Marine / Vigilant SR-500 is also a Debeg 
2051, and the manual is available on the Mods.DKwebsite.
I wonder if it goes by any other names as well....

I traced the fault on my "working" Ebay unit to a U/S 1Mhz crystal on the 
reference oscillator PCB, combined with a previous owners attempt at 
modifying the input attenuator having shorted the antenna input to GND. It 
certainly attenuated the input signals alright :-)

So thanks again for all the help, and at least if anyone else is looking for 
a copy of said manual in the future We'll be able to point them in the right 
direction.

Cheers,
Dave.S.
----- Original Message ----- 
From: "Chas" <chas.g1rsk at ntlworld.com>
To: <premium-rx at mailman.qth.net>
Sent: Friday, May 25, 2012 12:53 AM
Subject: Re: [Premium-Rx] STC Marine 800 / Vigilant SR500


> Hi Dave.
> Did you find any info on the stc receiver?
> I had one several years ago and had to replace the preselctor motor + a
> couple of relays on that board.....still looking through my collection of
> manuals (I did have one) can't remember if it went with the radio when I 
> let
> it go.
> PS I also did a mod on it to give lsb....seem to remember it was just a 
> case
> of  changing the stop position on the mode switch and adding the extra
> connections.... but need the manual to remember exactly what I did
> (catch22).
> Will keep looking.
> As for tants (hate em) Had a spectacular failure on a pye whitehall txrx
> ....moved it of the bench on to lap (whilst powered up) to re-arrange 
> power
> lead & coax when the workshop floor lit up briefly ....it was then I felt 
> a
> searing pain in my leg as the incendiary device (47uf 16v) unsoldered 
> itself
> and continued to burrow thru my jeans into my leg....needless to say the
> radio accelerated towards the ceiling and I did a roger bannister to the
> nearest water supply....
> I still have the scar 25 years later (mental as well as physical). Most of
> the time they are very inoccuous but sometimes just sometimes they can be
> spectacular when they fail.
> 73's Chas.
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