(physics) longwave

a mountain (large mass of earth and rock) or (large) hill / a mine (excavation usually consisting of small tunnels) / a heap, pile / the top or high part of an object / a chance, gamble / a climax, peak

the other side; reverse side; back side

building, structure, construction, edifice

radio / (slang, dated) broke, having no money; dining and dashing (punning off of 無線 (musen, “wireless”) with the sense of 無銭 (musen, “money-less”)) / radiation (when used as part of a compound)

reception of a signal, such as a broadcast signal / reception of a communication, such as an email or telegraph / reception of information

receive a signal / receive a communication / receive information

broadcast

broadcast (a radio or TV transmission on air)

a transistor radio