Well, Pat, I'm looking at either another Astron, or one of the JetStream 
supplies, which are considerably cheaper, and which I have also heard good 
things about.

Will take it one step at a time here.

Tom Behler: KB8TYJ

----- Original Message ----- 
From: "Pat Byrne" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, June 02, 2012 1:15 PM
Subject: Re: Could it be time to replace My old trusty Astron RS35 Power 
Supply?


> 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
>