[evlatests] Strange Tcals and Switched Power behavior

[Rick Perley]

   Ken of course means 1000 MHz!

    The lower subband was tuned to 1452 MHz -- not at all close to 1000 
MHz. 

    Perusing the Tsys results at this band, it is clear that the 
nonsensical Tsys and Tcal values are indeed all within subband 1.  The 
system is acting like it *thinks* the lower subband is somewhere near 
1000 MHz, when in fact it is not. What values are being used to 
interpolate the Tcal tables? 

Ken Sowinski wrote:
> I used Barry's utility to examine L band Tcals.
>
> If Rick happened to look at a subband tuned near 1000 GHz, then the
> recorded Tcals are indeed a few tens of K.  I verified that Tcals
> for ea24 are all around -24 K.  Correct values will have to be found
> and inserted into the database.
>
>
> On Mon, 1 Nov 2010, Barry Clark wrote:
>
>> To look at Tcals in the evlaparm database, the easiest way is
>> ~bclark/mcme/genexecq commons.util.CalSpectrum <receiver> <antenna> 
>> <polariz>
>> Example
>> ~bclark/mcme/genexecq commons.util.CalSpectrum 6GHz ea15 R
>>
>> I can make a simpler launch script if needed.
>>
>
>>> On Sun, 31 Oct 2010, Rick Perley wrote:
>>>
>>>>    At L-band:  Most of the values are quite nonsensical.  Typical
>>>> values are 20 to 50 K.  Some of them are over 200K.  One antenna 
>>>> (24, on
>>>> all IFs) has *negative* values of Tcal.