Fig. 4: Operation of VHF/UHF radio.
From: Design and flight results of the VHF/UHF communication system of Longjiang lunar microsatellites
a Dwingeloo 25 m radio telescope (PI9CAM) in the Netherlands, as the largest participating ground station antenna. b 28-element Yagi antenna on a tripod, used by radio amateur Robert Mattaliano (N6RFM) in the US, as an example of a small ground station antenna. c Image of the 2 July 2019 total solar eclipse (color corrected). d Positions of the ground stations taking part in the operation of the VHF/UHF radio. e Spectrum plot of GMSK downlink received by different ground stations. f Waterfall plot of GMSK downlink from direct path and moonbounce path comparing with prediction.
