Topband: Detuning towers and K9AY loops
Billy Cox
aa4nu@ix.netcom.com
Fri, 22 Nov 2002 18:09:32 -0600
>In general you want a modest length of drop wire, something that uses
>a fairly large capacitor for tuning. The drop wire connects someplace
>above the point where the system ties to the tower.
<snip>
>You adjust the capacitor's reactance to tune the system. In BC
>systems we used a small variable L in series with a fixed
>capacitor...but for amateur use a conventional air variable would
>work just fine.
ON4UN's book shows using a MFJ-931 "ground tuner" to do the above ...
Anyone used that unit? Results? (ah ... yet another project ...)
TU!
73 Billy AA4NU