If it is time for the Astron to R I P, there are probably newer, 
higher rated Astron units.  They surely are workhorses, Tom.
I have two RS35s; one on the 756PRO  III and the other on the 
TS850.  Absolute overkill but I happen to have two of them, so why 
not!!  I am a big Astron fan.
Pat, K9JAUAt 08:54 PM 6/1/2012, you wrote:
>Hi, folks.
>
>I know we have had similar discussions on the list before, but tonight I
>feel I have discovered something that may be of interest to others.
>
>Basically, over the past few days, I have found that even when transmitting
>on the resonant frequency of an antenna with a 1.0 to 1 SWR, my TS590 seems
>to fold back to an output power of approximately 50 watts.  These power
>readings have been obtained from both the meter on the TS590, and my TW1
>talking watt meter.
>
>I thoroughly checked all coax and DC power connections, but everything
>seemed ok.
>
>I measured the power supply's voltage first with no load, and it was 13.35
>volts consistently.  However, when I transmitted in RTTY mode with 100
>watts, thereby putting a full load into the circuit, the DC voltage readings
>started fluctuating all over the place.  They ranged from a high of 10
>volts, to as low as 2 or 3 volts.  Then, on a whim, I connected the Kenwood
>PS53 power supply that I got with the Kenwood 570 I purchased from the
>estate sale in our area, and the output power readings were a very solid 100
>watts, even when the rig was keyed down continuously for several minutes.
>
>I know there is a way to adjust the voltage in the RS35, but with the
>foldback of the ts590, and the fluctuations in voltage readings, I'm now
>getting a bit nervous about using the RS35 as my main supply.
>
>Does anyone have any thoughts or similar experiences to report?
>
>If I do need to be in the market for a new power supply, I have several
>requirements:
>
>1.  I'd like it to be a linear supply
>
>2.  I'd like it to be something that could deliver at least 40 amps
>continuously through my rigrunner, because I sometimes run the TS590, my
>TMV71A, and my TMV7A packet set-up simultaneously.
>
>If anyone has specific suggestions regarding a supply that I might wish to
>consider, please let me know.
>
>73 from Tom Behler: KB8TYJ