Johan,
This design looks very nice! AO 6.5 with 10 seg/el gives 8.0 to 8.6 dBi on
all bands with F/B better than 22 dB. An equivalent sized LPDA (13
elements, 15m boom, TAU=0.92, SIG=.09, 13.5-29.5 MHz) gives me 6.8 to 7.9
dBi on all bands with 13-26 dB F/B using an AO model generated by LPCAD.
Increasing the TAU to .94 will give better F/B, but will also increase the
number of elements.
Do you need to terminate the unused driven elements in your design?
73 Roger WB0DGF
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