[evlatests] Typos in my last message
Rick Perley
rperley at nrao.edu
Fri Jul 7 17:07:07 EDT 2006
All:
A couple of typos appeared in my last message on the '8797 Birdie'.
I've cleaned it up, below.
> A number of tests have been done to elucidate the nature of this
>birdie. It's defnitely a weird one!
>
> All test are in spectral line. I give below the *center* frequency,
>full BW, and apparently
>frequency of the birdie.
>
>A) 8790/25 MHz. The birdie appears at 8797.5 MHz
>
>B) 8793/12.5 MHz. The birdie is very weak, and appears at 8797.5
> 8796/12.5 MHz The birdie is very strong, at 8797.5.
> 8799/12.5 MHz The birdie is of moderate strength, but at
>8795 MHz.
> All other frequencies attempted in this run (from 8790,
>8803, 8806, 8809, and 8812 MHz) showed
>no birdies at all. All of these were taken with 12.5 MHz BW.
>
>
>
>C) 8790/6, 8795/6, 8800/6, and 8805/6: No birdie is seen in any of
>these combinations.
>
> Obviously, the 'real' signal is not at any of the frequencies
>listed. So, where is it, and how is it
>getting in?
>
>
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>
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