urn:nasa:pds:context:instrument:arecibo.305m.recv_s 1.1 1.21.0.0 Product_Context 2024-06-13 1.1 Updated to PDS IM v1.21.0.0. Updated version_id. Added references Added content to Instrument:description. 2020-01-14 1.0 Initial export from OLAF urn:nasa:pds:context:telescope:arecibo.305m instrument_to_telescope 305-m fixed spherical reflecting antenna Arecibo 2380 MHz Radar Receiver Radio Receiver The Arecibo Planetary Radar Receiver is a single-pixel cryogenically-cooled High Electron Mobility Transistor (HEMT) amplifier mounted on the Arecibo 305-m telescope. It has a filter bandpass of approximately 100 MHz centered at 2380 MHz to best match the bandpass of the Arecibo Planetary Radar Transmitter. Earlier implementations of the Arecibo Planetary Radar Receiver had similar properties but somewhat varying performance.