[Kenwood] ASTRON RS-35M

[Jim Miller]

The only other problem I have experienced with the Astron was a 20 amp and I
probably was running it too hard and it blew the 723 chip.  I now have a 723
chip taped to the inside of the lid in each of my Astrons.  Haven't needed
another yet. Conclusion is to get a spare and you will never need it hi hi.

73,Jim KG0KP

-----Original Message-----
From: Kenwood [mailto:kenwood-bounces at mailman.qth.net] On Behalf Of Jim
Miller
Sent: Friday, November 11, 2016 9:31 PM
To: 'Kenneth G. Gordon'; 'Tim Billingsley'
Cc: Kenwood at mailman.qth.net
Subject: Re: [Kenwood] ASTRON RS-35M

Same thing here.  I called Astron, described the problem and what I had done
and he told me what to try.  Turns out that my problem was the incorrect
resisters in the crowbar circuit that would sense over current and trigger.
I asked what they should be/measure and it had the wrong resister installed.
I dug in my bins and came out with one that I could parallel with what was
there and it worked.  In my case it would only handle about 15 amps then
trigger instead of carrying anything more.  I am sure that is why the
previous owner had sole it.  The call cign on the back wsas not the person I
bought it form and I knew the call sign owner.  He wouldn't acknowledge
knowing anything about the problem, said he hadn't used it for that much
power (or course).  Still have it and it works great.

73 Jim KG0KP

-----Original Message-----
From: Kenwood [mailto:kenwood-bounces at mailman.qth.net] On Behalf Of Kenneth
G. Gordon
Sent: Friday, November 11, 2016 2:43 PM
To: Tim Billingsley
Cc: Kenwood at mailman.qth.net
Subject: Re: [Kenwood] ASTRON RS-35M

Tim: 

Many years ago, I had a similar, if not identical, problem with a couple of
Astron RS-35s. At that time, I called Astron, mentioned the problem, and the
designer told me of a design or build error which could be easily fixed.

I am going to have to look in my voluminous files for the exact information,
but will do so and will get back with you as soon as I possibly can. I only
hope I can still find it.

Whatever it was that he told me was extremely easy to fix.

Hang in there for a bit.

Ken W7EKB

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