OK, I believe it was this line, "secondly as the radials are swept closer to the central monopole impedance drops and resonant frequency of both radial sleeve and monopole goes up,
conventional maths for electrical length go out of the window as you sweep the radials up towards the central monopole,
for instance a gamma fed monopole with 90 degree radials that is electrically 3/4wave will be less than 3/4wave when you sweep the radials up" Which inspired me to ask, "how can both of you still end up with the same basic length radiator (~29' 7") IF as the loop size is increased and the angle of the radials falls further away from the radiator, the radiator must grow longer to retain resonance, gain, and a low TOA...???
as it appears the farther the radials get from the radiator, the resonance drops in frequency for the same length radiator.
Bob, since you have ~90" radials it would seem your ring would be smaller thus making your radials closer to the radiator than Shockwave's thus increasing the frequency of resonance in comparison to Shockwave's larger ring / shorter radials (81") and thus farther spacing away from the radiator.
I believe I meant shorter, but either way, how can both of your antennas be operating the same when your radials are longer thus making your ring smaller and closer to the same length monopole as Shockwave's?
Is yours tuned higher in frequency than Shockwave's or am I confused? 
