Hi, George!
I finally found my notebook with my antenna VSWR results, and sad to
say, I must apologize for an exaggeration about the antenna being less
than 1.2 from 108 to 136; it wasn't. Here's the actual: 1.2 - 119/144;
,1.5 - 109/148; 2.0 - 108/150. Here are the dimensions: Each
antenna-half element was shaped as a triangular segment of a circle
15.125" long (radius), 13" across the tips of the segment
circumference, with the two elements separated by 3/4". The inner ends
were 3/4" wide. Increasing the radius to about 16" would probably
center the response over the aircraft VHF band better. Paul