| Type | FET uncooled |
|---|---|
| Channels | 2 |
| Receiver Noise Temperature | 130 K |
| Frequency Range | 595 - 626 MHz |
| Bandwidth RF-Filters | 595 - 626 MHz |
| Polarization | LHC and RHC |
| Calibration | Noise Diode |
| Feed | Dipolsystem A 173 |
| 1. IF | 146 - 154 MHz |
| 1. Oscillator | ULO2 or LO 460 MHz |
The 610 MHz system is a prime focus receiver using uncooled FET amplifiers. It was constructed for VLBI observations. The local oscillator (LO) is a synthesizer in the prime focus cabin and is not obtained from the ULO system. The receiver does not contain any components allowing continuum observations with a polarimeter. There is no phase shifter and no injected swept frequency (VTO) signal for cable and phase equalization. Interference from television transmitters is to be expected at this frequency. There is a regional protection for a narrow frequency range, permitting VLBI observations, but sensitive continuum observations are not possible due to the strong out-of-band interfering transmitters.