Tom,

You mite want to check it from time to time, however it mite be something as simple as a dirty connecter and changing power supplies may have made the difference.

73 and happy new year.
Keith-wa9dro
Keith Reedy
Click the link below to download MP3's of Keith Reedy's music as a gift from Bibles For The Blind.

http://biblesfortheblind.org/download_music.shtml

God gives His best to those who leave the choice with Him.  J Hudson Taylor.




On Dec 29, 2011, at 7:46 PM, Tom Behler wrote:

>    Hi, all.
> 
> Well, it has been a very interesting hour here, as I have tried to figure 
> out what was going on with the reduced power readings I was getting with my 
> TS590.
> 
> First of all, I want to say a great big thanks to Steve Dresser (WA1RTB). 
> For whatever reason, I did not know that pressing the PF function button for 
> S meter readings when transmitting gives you the rig's output power. 
> Knowing this, and using this function has made a world of difference.
> 
> Before I say anythihng more, let me re-state that all power readings were 
> taken with the rig's internal tuner off, the TX power control in the highest 
> possible position, and with my Tentech 238A manual antenna tuner in the 
> bypass position.
> 
> My first series of tests this evening involved taking power readings at the 
> resonant frequency of one of my antennas.  My output power readings with 
> both the TW1 and the Rig's power meter varied anywhere from 68 to 80 watts. 
> In all cases, I was using my Astron RS35 linear power supply.
> 
> 
> 
> Then, I decided to switch power supplies.  I retrieved my Samlex 1235 supply 
> from my RV, and tested things with that supply.  Again, for the tests, the 
> conditions were the same with this new supply.
> 
> When I took power readings this time, the rig's meter gave me a solid and 
> consistent 100 watts.  The TW1 gave me readings that varied between 87 and 
> 89 watts, but they were at least closer to being in the ballpark especially 
> when it is considered that the TW1 has about a 10% error margin.
> 
> Then, I connected things back up to the Astron RS35 supply, and, for reasons 
> that I don't understand, I once again got consistent 100 watt readings from 
> the TS590 watt meter, and found the TW1 readings to vary from 81 to 89 
> watts.
> 
> As a result, I am coming to two conclusions:
> 
> 1.  Either something is starting to get flaky with my 14-year-old RS35 
> supply;  or
> 
> 2.  When I did the tests with the Samlex supply, something might have gotten 
> re-set in the rig so that 100 watts now means 100 watts.
> 
> Do any of these arguments make sense?
> 
> Should I begin to get into the market for a new power supply?
> 
> Just seeking some advice here.
> 
> 73 from Tom Behler: KB8TYJ