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<img src="cid:part1.05070707.08030805@bartk.us" alt=""><br>
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<img src="cid:part2.06090700.05010805@bartk.us" alt=""><br>
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<img src="cid:part3.04090102.02060705@bartk.us" alt=""><br>
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<img src="cid:part4.03080902.09010708@bartk.us" alt=""><br>
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<img src="cid:part5.07020409.08050107@bartk.us" alt=""><br>
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<img src="cid:part6.00080001.06060304@bartk.us" alt=""><br>
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<img src="cid:part7.07010908.03060207@bartk.us" alt=""><br>
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And despite all that, the attenuation between TX+RX antennas is
still 65.5dB! This must be reflections internal to my garage.
Gotta re-run these measurements outside.<br>
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Also, the angles on the shield are too shallow. I gave it a 130 deg
opening, but the back is recessed from the active elements of the
antenna, so this doesn't actually shield as much as it should.
It'll be fun to see this on the radiation pattern measurement
range! See before + after. Might have to use a wider shield. This
is 2ft by 1ft sheet.<br>
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The bolt pattern won't work for production use. In real life, if
these shields are to be used, they'll just hang on via the 2
mounting bolts at the very center of the back of the antenna. You
can just see their nuts pointing up in the last picture. Undoing
all the other bolts while the antenna is inside the radome would
permanently break the antenna. Spacers would get knocked loose, and
you'd have to destroy the radome to re-align things.<br>
<br>
This antenna is entirely metric. Horizontal spacing between all
bolts = 6cm. Spacing between the upper/lower bolts and the inner
bolts = 20cm. Spacing between the inner bolts = 6.8cm. Holes are
fine with 1/4" drill. Bolts are M10.<br>
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--Bart<br>
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