Hi Pat.

I used the following method to adjust my antenna tuner, and it always
worked for me.

First, I would set my  capacitors to the middle of their ranges.  Then, I
would adjust the inductor for maximum receive noise.  Then I would peak my
capacitors, adjusting the one on the transmitter side first, and then the
one on the load side.  Once I thought I had the receive peaked, I would
feed just enough drive from the transmitter to calibrate the VSWR meter,
and then adjust the capacitors for minimum SWR.  I was usually pretty close
to the dip, by just peaking the receive noise.  Occasionally, I might have
to adjust the inductor, but most of the time I could find the right
inductor setting by ear and would just have to fine tune the capacitors.

73, de Lou K2LKK




At 04:45 PM 8/26/2004 -0500, you wrote:
>Hi Steve,
>
>A rotary inductor will require a number of turns of the control knob to go
>from one end to the other.  At one end the entire value of the coil is in
>the circuit - at the other, almost no inductance is left.
>
>It shouldn't be too hard, once you know the number of turns end to end, to
>learn/remember where to stop tuning for a particular frequency.
>
>Hope this helps.
>
>Pat, K9JAUAt 04:15 PM 8/26/2004 -0400, you wrote:
> >Anyone using  an HF tuner with roller inductor?  Is it any  more difficult
> >to return to prevvious settings compared to a tapped inductor,  where you
> >just click around the different stops.
> >
> >Does a roller inductor  have a single 360 degree  sweep like the variable
> >caps, where a full turn puts you  back at the same point you started, or  do
> >more and more turns  keep changing the inductance?
> >
> >Ovviously, I've never used or even seen one of these things.  Hope to update
> >the shack with a new tuner for  better 160 work this winter.
> >
> >73 Steve KW3A
> >[log in to unmask]

Louis Kim Kline
A.R.S. K2LKK
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