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Subject:
From:
Tom Behler <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Fri, 30 Dec 2011 07:01:31 -0500
Content-Type:
text/plain
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    Yup, it's still around 13.35 volts on the Astron.

73 from Tom Behler: Kb8TYJ

----- Original Message ----- 
From: "Gerry Leary" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, December 30, 2011 6:16 AM
Subject: Re: Reduced TS590 Output Power Followup


> Tom, Did you check the voltage again now that the power is up?
> ----- Original Message ----- 
> From: "Tom Behler" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, December 29, 2011 7:03 PM
> Subject: Re: Reduced TS590 Output Power Followup
>
>
>>    Pat and all:
>>
>> Well my approach at this point will be just to keep an eye on things, and
>> check periodically for later output power drops.
>>
>> If the RS35 does get flaky again, I am going to keep the Samlex switching
>> supply in the home shack as a back-up.  No sense having it just sitting
>> out
>> in the RV in the dead of winter doing nothing.
>>
>> 73 from Tom Behler: KB8TYJ
>>
>> ----- Original Message ----- 
>> From: "Pat Byrne" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Thursday, December 29, 2011 8:43 PM
>> Subject: Re: Reduced TS590 Output Power Followup
>>
>>
>>>I have to join the concensus Tom; perhaps disconnecting and
>>> reconnecting the power leads to the Astron cleared a bit of corosion
>>> or something that was causing a voltage drop down the chain, but
>>> sounds now like you are back in business.  Part of me wants to get
>>> serious and check voltage and power outputs but the practical lazy
>>> side of me says leave sleeping dogs lie!!
>>> But you wound up on top.
>>> Happy New Year!!
>>> Pat, K9JAUAt 06:46 PM 12/29/2011, you 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
>>>
> 

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