[TenTec] Fw: Your semi-annual Astron tip...

[Mike Hyder -N4NT-]

Sorry, all I know about is the Astron RS-35 circa 2001.  I do not know what 
changes they may have made.  If you examine a schematic of that supply, you 
will see that if RF gets into the negative post, it goes straight to the 
regulator circuitry.

73, Mike N4NT

----- Original Message ----- 
From: "NJ0IP" <Rick at DJ0IP.de>
To: "'Discussion of Ten-Tec Equipment'" <tentec at contesting.com>
Sent: Tuesday, November 29, 2005 10:19 AM
Subject: Re: [TenTec] Fw: Your semi-annual Astron tip...


Mike, do you know if the 963 has floating ground?
Of course I could measure it, but this is the easiest way to find out.

73
Rick

-----Original Message-----
From: tentec-bounces at contesting.com [mailto:tentec-bounces at contesting.com]
On Behalf Of Mike Hyder -N4NT-
Sent: Tuesday, November 29, 2005 6:07 AM
To: Ten-Tec Reflector
Subject: [TenTec] Fw: Your semi-annual Astron tip...

Your semi-annual Astron tip...

People come and go from this reflector. This is a reminder that many
troubles with Astron power supplies can be cured by grounding the negative
post to the cabinet.  I did it by removing the insulators from the negative
post, scraping some paint from around the hole and putting a lockwasher on
the post when reinstalling.  Below is my correspondence with them about it.

Happy November,
Mike -N4NT-

----- Original Message -----
From: "ASTRON" <sales at astroncorp.com>
To: "Mike Hyder" <N4NT at chartertn.net>
Sent: Tuesday, November 20, 2001 6:06 PM
Subject: Re: RS-35 in an RF environment

MIKE.

1ST CHECK YOUR AC OUTLET GROUND IT MUST HAVE GOOD CONNECTION

2ND. MEASURE FROM THE -13.8V TERMINAL TO CHASSIS, IF NO DIRECT CONNECTION,
RUN A PIECE OF WIRE FROM -13.8V TERMINAL TO CHASSIS.

JANE

----- Original Message -----
From: Mike Hyder <N4NT at chartertn.net
To: <eastron at astroncorp.com
Sent: Tuesday, November 13, 2001 7:56 AM
Subject: RS-35 in an RF environment

Several people have advised me that Astron had a service bulletin for the
Astron RS-35 (and possibly other models) which advised to strap the negative
post of the supply to the cabinet to reduce or eliminate problems caused
when RF energy affects the supply's regulation.  This is in particular a
frequent problem in the amateur radio service.

Could you confirm such bulletin and either email it to me or point me to the
URL that will allow me to view it, please?

Many thanks,
Mike Hyder