Topband: Shunt feeding the Skyneedle - new developments

[Tom W8JI]

Thanks for the tip.  I may play with a bit of inductance just to see how the 
system reacts. >>>

This is way more problematic than it needs to be.

First, no one even knows if the reactance is real or a false reading caused 
by a bit error from calibration or noise.

Second, no one knows the sign of the reactance if it is there. It might be 
already be inductive.

Third, if the capacitor is not maxed out or at minimum and still has range 
left, which yours does, the capacitor will adjust out any reactance without 
adding anything else.

There are certain bridge voltages that with even one or two bits error, 
which is 2/256 bits or less than 1% error in voltages, where 10 ohms might 
be calculated. The algoryth tries to take that error out by watching SWR 
near bridge balance instead of bridge arm voltages, but I have no idea how 
the unit is calibrated or if the antenna system has noise causing a bit 
error.

All of this is pretty much meaningless. Even if it is a 1.3 :1 SWR, it is 
not going to be a problem. Also, if the real part is near 40 ohms and you 
have a high Q antenna system and losses, you might find lowest SWR is not 
X=0 because of interactions between resistance and reactance as things are 
tuned.

I would not even guess at a cure for something with a bunch of unknowns that 
might not even be a problem. I think this is a bigger worry and more complex 
than it should be.

73 Tom