| Type | HEMT, cooled | |
|---|---|---|
| Channels | 2 | |
| Receiver Noise Temperature | 10 K | |
| Feed | MPIfR Prime Focus Horn | |
| Frequency Range | 1.2 - 1.8 GHz | |
| Bandwidth available | Narrow Band on Coax IF 1.2 - 1.8 GHz |
Broad Band on Optical IF |
| Bandwidth RF-Filters (selectable) | 1290 - 1430 MHz 1580 - 1725 MHz |
1.2 - 1.8 GHz 1.5 - 1.8 GHz |
| Polarization | LHC and RHC | LHC and RHC |
| Calibration | Noise Diode | Noise Diode |
| Phaseshifter | in LO-system | no |
| 1. IF | 80 - 220 MHz | no down-conversion |
| 1. Oscillator | ULO1 or LO 1.2 - 1.8 GHz | n/a |
Comments
The 1.2-1.8 GHz system is a prime focus receiver with cooled HEMT
amplifiers. The system is
built to observe circular polarization, the transducer comprises a
cooled linear transducer (design
NRAO) followed by a cooled hybrid.
This system is part of Primary Focus Multi Frequency Box #1 (PM 1).