My 160m antenna died several weeks ago from a bad coax feed line and was restored just Sunday after the contest. I have tried several antenna analyzers and none seem to work with the loop antenna. I designed the antenna for 100 ohm feed and always wanted to put a half wavelength coax on an analyzer to measure R and J to achieve the best match. Calculated series transformer of 50 and 75 ohm coax seems to match the antenna quite well as anticipated. But, no matter how I try with any of my many devices, I can't get the boxes to work with the loop. The readings are not consistent. They just don't seem to like the antenna. Other wire or yagi antennas work as expected. Questions about if others have tried to measure loops or theoretical reasons why the various devices can't read the impedance are obvious and responses welcome. Thanks.
David J Rodman, MD Assistant Clinical Professor Department of Ophthalmology SUNY/Buffalo Office 716-857-8654 _______________________________________________ Topband reflector - [email protected]
