| Type | HEMT, cooled |
|---|---|
| Channels | 2 |
| Receiver Noise Temperature | 40-50 K |
| Frequency Range | 12.1 - 13.6 GHz |
| Bandwidth RF-Filters | 12.1 - 12.28 GHz / 12.9 - 13.6 GHz |
| Polarization | LHC and RHC |
| Calibration | Noise Diode |
| Feed | Prime Focus Horn |
| 1. IF | 1.72 - 2.48 GHz |
| 1. Oscillator | ULO1 (x8) 1.331 - 1.418 GHz |
| 2. IF | 100 - 200 MHz |
| 2. Oscillator | ULO2 (x3) 2.1 GHz |
The 13.25 GHz system is a total power receiver with cooled HEMT preamplifiers. It is mainly
constructed for spectroscopy measurements. There is no polarimeter available.
The broadband IF output is prepared to be connected via optical link. The V/F-Converters at the broadband detectors have a maximum frequency of 5 MHz to give enough resolution for pulsar work.
This system is part of the Primary Focus Multi Frequency Box #2 (PM 2).
| Sky Frequency | Tcal Channel A | Tcal Channel B |
|---|---|---|
| 13.04GHz | 21.0K / 1.8K | 22.7K / 1.9K |
| 13.25GHz | 20.8K / 12.1K | 22.3K / 2.1K |
| 13.45GHz | 17.7K / 1.4K | 20.1K / 1.9K |