1) Certain radar beacon
Found on
https://www.crosswordclues.com/clue/ramark
A Ramark is a type of radar beacon occasionally used{Where|date=July 2011} to mark maritime navigational hazards. The word is an acronym for RAdar MARKer. They are wide-band beacons which transmit either continuously or periodically on the radar bands. The transmission forms a line of Morse characters on a plan position indicator radar display whi...
Found on
http://en.wikipedia.org/wiki/Ramark
A radar beacon which continuously transmits a signal appearing as a radial line on the ppi, indicati
Found on
https://www.encyclo.co.uk/local/22373
No exact match found.
