[evlatests] Abnormal reported Tsys values

[Ken Sowinski]

On Mon, 15 Nov 2010, Rick Perley wrote:

>    Antenna 24 at L-band:  Tsys ~ 5 K, which is certainly *not* real!
> This antenna is known to have an unusually (and deliberately!) high
> Pcal, so it seems clear that the problem is the Tcal listing is about a
> factor of 5 too low.

In December 2009 Bob Hayward reported the T_cals for this
receiver were 8K, somewhere in the band.  That is a reasonable
number to use if we can support a one point "spectrum".