Thermal calibration data for the K-band focal plane array receiver. Single pixel. 01/07/2009 Ward, Simon Notes: 1. This is the first set of measured data using the type II single conversion downconverter. 1a. Used cold LN2 box with absorber (medium size blue absorber) and 300K absorber (small size grey absorber) over feed. 2. Using the freq doubler (with high pass filter between doubler and downconverter) for LO1, so LO1 frequencies are 1/2 the actual LO1 frequency. Formula: (Fsky+6800)/2=LO1 LO2 set to 8900 Mhz fixed 3. All measurements done using the PC, ADIOS, "M" program. 4. The band is broken in half: 1st band: 17.6-22.6 Ghz, 26 data points, k176226.lst 2nd band: 22.8-27.8 Ghz, 26 data points, k228278.lst 5. Used 80K for cold temp. Used 296K for hot load temp. 6. 300/40 filter in the total power box. We did not use the 401, 402 amps. We seemed to get less stability when they were used. 7. See set-up drawing in notebook, dated 1/7/09 for details.