T1 ATU and Sierra

[thomaskd]

I have an Elecraft T1 ATU that I am trying to make work with a Wilderness Radio QRP rig.  I am new to using ATU's and have what might be a simple question:  Am I doing it right?

I made an end-fed antenna that is often called the W3EDP antenna. 85 feet long with a 17ft counterpoise. I hooked it up for the first time today and tried to get it to tune on 40M. I could hear the relays clicking and clicking.  Finally, it seemed to get a 2:1 or so match.  I think.

To do the tuning I would hit the PWR/TUN button on the T1 until it flashed green.  Then I would hit both speed buttons on the Sierra to put it into Tune mode.  The relays would click, click and click some more.  Finally the T1 would settle down and then I would kick the Sierra out of Tune mode.  Is this the correct procedure?  

When the Sierra is tuning it shows the estimated Watts out.  As the T1 relays are clicking I can see the Watts out number changing on the Sierra. I would see it move around.  Often, the final "match" would show up as a very number of watts out (< 1) but I had seen higher numbers while it was tuning.

Am I doing this correct and is there a way to validate that it  has tuned it OK?

Thanks in advance.

73 de Keith KB3ILS




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[Karl Larsen]

    Hi Keith, Everything is working just GREAT! Just like it should. On
that antenna it takes 10 seconds for the automatic tuner to do it's job
and it does. I think you need another counterpoise about 33 feet to get
the swr down to 1:1.

    Do not worry about the estimated power out. If your curious do a
power out measurement after you tune up.

73 Karl K5DI




[hidden email] wrote:

> I have an Elecraft T1 ATU that I am trying to make work with a Wilderness Radio QRP rig.  I am new to using ATU's and have what might be a simple question:  Am I doing it right?
>
> I made an end-fed antenna that is often called the W3EDP antenna. 85 feet long with a 17ft counterpoise. I hooked it up for the first time today and tried to get it to tune on 40M. I could hear the relays clicking and clicking.  Finally, it seemed to get a 2:1 or so match.  I think.
>
> To do the tuning I would hit the PWR/TUN button on the T1 until it flashed green.  Then I would hit both speed buttons on the Sierra to put it into Tune mode.  The relays would click, click and click some more.  Finally the T1 would settle down and then I would kick the Sierra out of Tune mode.  Is this the correct procedure?  
>
> When the Sierra is tuning it shows the estimated Watts out.  As the T1 relays are clicking I can see the Watts out number changing on the Sierra. I would see it move around.  Often, the final "match" would show up as a very number of watts out (< 1) but I had seen higher numbers while it was tuning.
>
> Am I doing this correct and is there a way to validate that it  has tuned it OK?
>
> Thanks in advance.
>
> 73 de Keith KB3ILS
>
>
>
> p://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>
>
>  

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