Airport communications

The first part of the article is devoted to a general discussion of (a) internal communication, (b) communication with outside fixed points and with other airports, (c) communication with aircraft, in which European and American practices are indicated, with comment on the respective specialized applications, relative advantages, safety aspects and economic considerations. This is followed by consideration of the requirements and the equipment used at La Guardia Field, and (d) by brief descriptions of the latest developments in instrument landing and radio direction-finding on land.