Trouble with lbw polB 1230-1470 filter (filter number 3)


        New diodes were installed in the lbw receiver in nov05. On 24nov05 they were measured using the absorber. The setup was:

    When the data was analyzed the 1320-1420 polB had jumps in the cal deflection (relative to Tsys on Absorber). The plots show the jumps in CalDeflection/Tsys (.ps)  (.pdf) : This jump was also seen in the lbw cal measurements done on 10jun05 while on absorber (see:  caldeflection/Tsys for the 9 passes (.ps) (.pdf). It did not occur as often as it did this time.