I have to admit something - I was not understanding how the results of the RF, LPF, and BP sweeps are to be interpreted. On the RF sweeps I was especially confused. I thought that the very low reading on the left side of the sweep was the bottom of the band. I did not realize that there is a vertical "line" displayed where the default band frequency is measured. Big difference! So, in my case it is not simply a case of RTFM, it is also UNDERSTAND TFM.
Well, it looks like one of those "It is what it is" situations. the windings for 20/30 meters on L510 and L513 cannot be spread any more than what they are; the turns are evenly spaced around the entire donut - photo attached. Those are the pair on the right side. I did squeeze the turns on L401 and that made a slight change with the RF Sweep. Results are:
80m -10
60m -2
40m -2
30m -5
20m -8
Not worried about 80 meters because my 80 meter antenna is not so good anyway and with only five watts (or less) I might as well transmit into a dummy load.
There was a slight improvement on 20 meters, from -9 to -8. So it appears not much else I can do without major surgery that might harm the other bands.
--
Jim / K7TXA
Eagle, ID
SKCC 10447T
BUG 301
