[evlatests] ea25, C band

[Charles Kutz]

We discovered other issues yesterday:
Looks as if we were given a top plate that may not have had feed guide 
pin bushings installed or the feed guide pins are the wrong ones, 
resulting in an alignment issue. We will take a look Friday when we send 
the team out to the site to install the X-Band and K-Band receivers into 
antenna 1.

Being painfully aware of the previous issue, we did not connect the 
heliax. Trying to prevent undue confusion generated by a system that is 
only kinda broke.

I'll post a note when the C-Band is ready for testing.



Chuck




Ken Sowinski wrote:
> The C band receiver was installed today.  I may be missing
> something but it looks like it doesn't work.
> 
> 1.  Low power levels in the downconverter.  Even with all the
>      attenuators wide open the sampler RMS is only 3 to 4.
> 
> 2.  SD voltages are zero at all 4 IFs.
> 
> 3.  No hint of fringes, but I forgot to look at the crossed
>      hand data.
> 
> 
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