Bob here are the Free Space models at 323" - 356" - 380" inches for the radiator lengths. A few years ago I tried to get a NV4K model to work while making the radiator 0.875 wavelengths, but with no success. I just did the same today, by modifying a Vector model to specs in Free Space that works well at 3/4 wavelength, and again no luck. I will spend some more time on these two and see if I missed anything. Notice how your 7/8 wave does better with the match than Donald's 0.82 wavelength. IMO, this is simply because your 7/8 wavelength is much closer to a 1/4 multiple at 1 wavelength. As I've commented before...I cannot question the ability to tune a Vector with a gamma match to various lengths. However. when I tried making my Sigma 4 - 30' feet long, I could not find a match anywhere within the range of the gamma adjustment. I messed with it for a big part of 2 days, adjusting, recording, and testing the match with my analyzer, but no-way-no. I also remember Booty Monster having issues tuning his Vector homebrew but maybe I missed finding out what he did to solve his problem. I have a recollection that HomerBB also had some issues too, but he will have to tell us what was going on in that regard...I think I missed that one too. I believe they both made there antennas longer than 3/4 wave, but again I'm not sure. I mentioned at some point in the past. all I could see was the frequency dropping when you guys made the radiators longer, and the attached SWR bandwidth curve reports show exactly that. That said however, I can only simulate a gamma. I question if a gamma can adjust out this much inductance unless modified too.