We found out that two of the antennas we tested had a connection problem, so we fixed it and re-tested the antennas. Here are the results:
DK2 – Long Thin Antenna

This graph shows a separation between 1 and 2 meters, but the separation is not as nice as before. I think the whip antenna looks better than this one (whip antenna link).
DN2 – Square Antenna

There is almost no separation here between the distances.
I think the whip antenna should be tested again with this new set-up to see if we can get the same trends as before.
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