Thanks for the thoughts, Pat.

I'm certainly not looking for more things to worry about here, but my
current RS35 supply has been a concern of mine for quite some time now.

What I really wish I could do is borrow another RS35 from someone, perhaps
in our local club, just to see if theirs behaves the same way.  But, so far,
this has not proven to be practical.

As I indicated in my last post, I think I might just hook up that PS53 to my
TS590 setup, and see if that has any impact on output power readings.  If it
does, then I may have at least a partial answer for better or worse.

Will be interested in the thoughts of others, and as always, I appreciate
everyone's patience with this discussion topic.

Tom Behler: KB8TYJ


-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Pat Byrne
Sent: Sunday, November 22, 2015 4:31 PM
To: [log in to unmask]
Subject: Re: Question On Kenwood PS53 Power Supply

Tom,
Unless I am way off base, the TS590 runs 100 watts final input - if that be
so, 75 watts output wouldn't be bad.  Or perhaps I am missing something
here.
Pat, K9JAU
And the Kenwood power supply is probably rated 16 amps. continuous so you
should be fine with it on the TS590.At 03:04 PM 11/22/2015, you wrote:
>Hello, everyone.
>
>
>
>I think I'm becoming more and more convinced that something might be 
>going wrong with the trusty Astron RS35 linear power supply that I have 
>been using here in the home shack for the past 18 years.
>
>
>
>Today, I had my XYL check the meters on the supply when keying up in 
>RTTY mode with 100 watts with my TS590, and the meters on the supply 
>read 14 volts, with only a draw of 11 amps.  I did this on a frequency 
>for which my DXCC antenna is resonant on 40 meters.  My SWR was 1.0 to 
>1, both according to  the TW1 and the meter on the TS590.  I then 
>checked my output power reading.  According to the TW1, it was 57 
>watts, and according to the TS590 meter, the output power was 75 watts.
>
>
>
>After our lenghthy discussions several weeks ago, when I noticed output 
>power problems with my TMV71A, I tried my best to clean all DC power 
>connections.
>
>
>
>
>
>My next step will be to try another power supply, just to see if that 
>makes a difference, which brings up a question.
>
>
>
>Does anyone on list have a Kenwood PS53 power supply?  I obtained this 
>supply from an estate sale several years ago, and I think it is meant 
>to be used with the Kenwood TS570, which I also obtained at that time.
>
>
>
>I had my XYL check the power draw ratings on the supply, and she told 
>me it says 16 amps.  This seems a bit low to me, and may not be 
>adequate for the
>TS590 on the full 100 watts.
>
>
>
>If anyone has accurate power draw ratings, or an accessible manual for 
>the
>PS53 supply, I'd appreciate the additional info.
>
>
>
>I'm hoping to do some further experimenting with all of this during the 
>upcoming Thanksgiving break.
>
>
>
>Tom Behler: KB8TYJ
>
>