[evlatests] 4-band antenna

[Dan Mertely]

Hi Rick.  Yes, there are 6 antennas outfitted with the MJP 4m
dipoles.  They are: ea06, ea10, ea12, ea14, ea18, & ea19.  All
6 are identified on the "VLA Antenna Modifications/Retrofits"
table in the "Mods" column, using the "M" designator.

I don't know if it explains your 2nd observation related to fringes,
but it might be noted that the output of the combiner "Sum" side
(0 deg sum) is applied to the R/Y input of the LBR FE.  The "Difference"
side (180 deg sum) is applied to the L/X input of the LBR FE.

-Mert


On 10/7/2014 7:45 AM, Rick Perley wrote:
>      In preparation for the C-configuration 'flux densities/models' run, I ran a
> quick test over all bands.
>
>      There are fringes from 5 antennas at 4-band:
>
>      6, 10, 12, 14, and 19.
>
>      I had understood there's a sixth one outfitted -- which is it? The
> 'coordination meeting' sheet lists only ea12 and ea19.
>
>      I note that the fringes from the 'YY' side are much stronger than the
> 'XX'.  I've made no attempt yet to calibrate.
>
>
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