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"Radio913" wrote in message ... If you put the array on a rotator and put a receive antenna with some sensitive output indicator beyond the near field, you can plot relative field, SNIP Also, i don't really have a transmitter that I can vary the power that much...maybe that's something i should make or get. Something variable at least by 20dB or so. Slick You don't need to pump power to measure antenna patterns. A simple signal generator with a milliwatt or so will work fine. If you want to be really serious about designing antennas, then you need to start acquiring serious tools. See eBay; start bidding on a sig gen, some pads (attenuators), a rotor, a field strength meter. Ed |