[Elecraft] ATU1 Help!

Mike Branca Mike Branca" <[email protected]
Wed Aug 7 08:24:01 2002


Hi Tim, I had the same problem when I built the LDG tuner.  Seems that I
wound the SWR toroid backwards.  Yup, I didn't follow the directions
properly.  My simple fix was to swap ends of the RF single wire going thru
the center,

Mike  W3IRZ in Conyers Georgia


----- Original Message -----
From: "Timothy Gordish" <[email protected]>
To: <[email protected]>
Sent: Wednesday, August 07, 2002 12:10 AM
Subject: [Elecraft] ATU1 Help!


> After enjoying my K1 for about a year, I decided to add the ATU1 so that
> I can more easily use it in the field with a random wire antenna.   I
> just finished it tonight and it seemed simple enough to build.  But of
> course it has those nasty toroids which I never seem to have any luck
> with.  Well it went through all the checks just fine, but when I finally
> tried to tune up the dumby load it didn't work.  The relays clicked and
> chattered but the SWR remained at 9.9 and when the chattering stopped I
> got a reading of P L o.  Doesn't make much sense to me since the rig
> seems to be transmitting just fine according to my wattmeter.
>
> Any ideas from the peanut gallery what I have done wrong?  My first
> thought was bad toroids so I did a resistance check on the pads and they
> all tested good, then I heated up the solder joints one more time for
> extra measure.  Still no joy.
>
> Tim Gordish
>
> Check out my homepage:
>
>
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