Rick,
I you use the T-match simulator at:
http://fermi.la.asu.edu/w9cf/tuner/tuner.html
you'll find that minimum tuner loss usually corresponds to minimum
inductance.
Tom (W8JI) has some interesting views on T-match adjustment. He argues
that capacitor arcing due to high voltages should be of much much more
concern than inductor heating and losses. Again, his advice is to use
the minimum inductance possible. More here:
http://www.w8ji.com/antenna_tuners.htm
73,
Steve G3TXQ
On 15/02/2011 21:43, Rick - NJ0IP / DJ0IP wrote:
> Gerry, this is what MFJ states in its manual:
>
> "Maximum tuner efficiency is achieved with the most capacitance (settings
> closest to 0) and the least possible
> inductance (higher letters of the alphabet). This efficiency translates into
> best power handling, broadest
> bandwidth, and least power loss. The goal is always to operate the tuner at
> the lowest Q for the LC
> (inductance/capacitance) circuit."
>
> I was a bit confused about the antenna matching well at 7.025 but dips at
> 7.500.
> You should get it to dip at any frequency, but of course you might get some
> dips better than others.
> The problem is, the C's do not have a vernier, so it is sometimes REAL
> sensitive when tuning.
> That's why I put larger knobs on mine. Made it easier to fine-tune.
>
> Rick
>
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