[evlatests] P-band dipole polarization

[Rick Perley]

     A short test was run yesterday evening to check whether the 
re-orientation of the dipoles solved the cross-polarization issues at 
P-band.


     Mixed results.


     Again taking ea01 as the 'gold standard', we have:


     A) Good antennas (< 5% cross-pol):  ea01, 12, 16, 22, 25 and 26.


     B) Bad antennas (> 15% cross-pol) :  ea10, 13, 15, 17, 21 and 27.

     ea15 is by far the worst (> 20% cross pol).

     So, ea06, 17 and 27 -- which were the worst before, are definitely 
better, but still not good.  So either:


     a) ea01 is itself off (a bad standard antenna), or:

     b) There is something else causing the coupling between the X and Y 
channels.


     Rick