Lou:
Sorry, I forgot to specify that in my last post.
Typically, I run everything through a rig runner, and use Anderson power
poles for the actual connections. In the case of this evening's testing,
Itook two sets of readings with each supply--one set using the rig runner,
and the other making a direct connection to the rig.
Surprisingly, taking the rig runner in and out of the circuit didn't seem to
make any real difference.
73 from Tom Behler: KB8TYJ
----- Original Message -----
From: "Lou Kolb" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, December 29, 2011 7:54 PM
Subject: Re: Reduced TS590 Output Power Followup
> Tom,
>
> How do you connect the power leads to the supply? Is it with power poles
> or
> bare leads under a nut? Seems more likely to me that you just had a
> better,
> more solid connection the second time you hooked up the Astron. I think I
> told you of my own problems which I thought were due to a failing supply
> but
> which turned out to be poor contact made by the fuse in its holder. Glad
> all seems to be well, though. Happy new year to you and family. 73, Lou
> Lou Kolb
> Voice-over Artist:
> Radio/TV Adds, Video narrations
> Messages On-hold:
> www.loukolb.com
> ----- Original Message -----
> From: "Tom Behler" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, December 29, 2011 7:46 PM
> Subject: Reduced TS590 Output Power Followup
>
>
>> 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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