Adjective
radiotelegraphic (not comparable)
Relating to radiotelegraphy.
Translated by Selimo Romeo Bottone (Whittaker & Co., 1906), 217. Cervera thus achieved some success in this field, but his radiotelegraphic activities ceased suddenly, the reasons for which are unclear to this day. Source: Internet
By the 1920s, there was a worldwide network of commercial and government radiotelegraphic stations, plus extensive use of radiotelegraphy by ships for both commercial purposes and passenger messages. Source: Internet