* calhhk2.rxg - HartRAO 1.3cm Water receiver parameter definition * * first line: LO values and ranges, format: * type frequencies * if type is range, the two values: lower and upper frequencies * if type is fixed, then one or two fixed value * frequencies in MHz * * NB tuneable LO range 21300-23700 MHz * range 21300 23700 * * 2nd line: creation date * format: yyyy ddd or yyyy mm dd (0 is valid for all for intial set-up) * 2007 02 23 * * 3rd line: FWHM beamwidthm format: * model value * * if type is frequncy, then fwhm=value*1.22*c/(freq*diameter) * value is 1.0 if omitted * if type is constant, then fwhm=value (degrees) * frequency 1.0 * * 4th line polarizations available * * one of both of lcp and rcp * lcp rcp * * 5th line: DPFU (degrees/Jansky) for polarizations in previous line in order * 0.09000 0.09000 * * 6th line: gain curve (only one) for ALL polarizations in 4th line * TYPE FORM COEFFICENTS ... * * FORM = POLY only for now * TYPE - ELEV and ALTAZ only for now * COEFFICENTS - variable number of number values * * maximum coefficents 10 * ALTAZ POLY 1.00 0.0001739 -1.412E-5 3.289E-7 -2.939E-9 * * 7th and following lines: tcal versus frequency * Format: POL FREQ TCAL * where: * POL polarization rcp or lcp * FREQ frequency (MHz) * TCAL degrees K * * MAXIMUM ENTRIES 100, group by polarization * then sorted by increasing freq * lcp 23000.0 71.0 rcp 23000.0 66.3 * *tcal table ends with end_tcal_table record * end_tcal_table * * Trec - receiver temperature, degrees K * * if value is zero, no opacity corrections are used * 0.0 * * Spillover table * * format: * elevation temperature * where: * elevation is angular degrees above horizon * temperature is Kelvin degrees of spillover noise * *spillover table ends with end_spillover_table record * end_spillover_table