Finally today I went in and finished off my antenna measurements.  I had a problem last week that I wasted a lot of time trying to figure out — the main beam pattern was shifted approximately 25 degrees off broadside, which is clearly not right for a patch antenna.  Problem is, the range absorber isn’t meant to go down below about 2-3GHz…so it was possible some reflections were present and this was a range problem.  After a lot of attempts to ensure both antennas were level, and plum, and aligned…I finally came in today and took a friend from lab’s suggestion that I restart the computer that runs the antenna positioner.  I restarted it, and all was well.  It’s a silly problem, and I really wish I didn’t spend all day Friday trying to find the problem, but at least now I have the patterns I need.  Here is a picture of the transmit antenna – a simple rectangular patch antenna -  I had to build, since the range doesn’t have horns that go down to 1GHz:

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