[evlatests] EA17 P-band dipole

[Huib Intema (NRAO)]

Hi Paul et al.,

I checked some WIDAR P-band data from this afternoon. The polarizations 
on EA17 are swapped. After correcting these in software, I measure a 
reduced cross-polarization of about 7 percent. So the dipole repair has 
reduced the cross-polarization to a level similar to most other antennas.

I'll send out a status report tomorrow afternoon. Most striking are the 
huge(!) bandpass ripples on EA08 LCP, EA20 LCP and EA23 RCP (all 16.5 
MHz = 9.1 meters).

-- Huib


On 28-Aug-14 16:20, Paul Harden wrote:
> Dan, Lynnae and myself re-installed the P-band dipole into EA17 today. 
> Return loss sweeps at the receiver shows good response and resonant 
> around 310 MHz.  Hopefully the repair also improved the cross 
> polarization problem.  The element pointing to the elevation axis 
> quadrupod leg (horizontal) is connected to the RCP (IF-A/B) IF channels.
>
> Paul
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