| The History of The Flight Refuelling ARS Microwave EME system, G4RFR |
| The History of The Flight Refuelling ARS Microwave EME system, G4RFR https://www.vhf.cz/soubory/category/8-datasheets?download=89:g4rfr-eng https://www.vhf.cz/soubory/category/8-datasheets?download=90:g4rfr-czech |