AMSAT-DL proposes the LunART - Luna Amateur Radio Transponder on the ESA Large European Lander, which is to be launched to the Moon: https://ideas.esa.int/servlet/hype/IMT?userAction=Browse&templateName=&documentId=81f70b2b01f6993c1b76fb6b572ee6c5 73, Nico PA0DLO