[evlatests] Moved antennas, etc.
Rob Long
rlong at nrao.edu
Tue Oct 5 16:42:53 EDT 2010
The L302-1 was replaced in this antenna.
Rob
Vivek Dhawan wrote:
> Hi Ken,
>
> another question since you seem to be reading email: The rotation
> index positions we got from the mechanics said there was little
> change (for old bands) from last time (years ago) and new bands
> were added. However, when I compare the (old) rotations for ea14
> in parminator with those from the mechanics, new or old, there is
> about a 10 deg rotation offset in the same sense for all bands.
>
> Is there an indexing offset to be applied to the antenna mechanics'
> readings, before entry into parminator? if so, how do I find it?
>
> Thanks, Vivek.
>
> Ken Sowinski wrote:
>>> EA14 - weak fringes were found at L band. I tried to peak up
>>> rotation, and delays, with no success. To be continued...
>> antennas sometime reappear with very large Az or El zero
>> changes. You might want to try that; if the previous
>> offsets were very large maybe they are smaller now.
>
> I'll check this.
>
>>> EA27 LO has been fixed - no more phase jumps on every scan
>> What fixed this?
>
> The LO was worked on, I do not know the details yet.
>>
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