"Bus-bar Aerial

Radio Record, Volume III, Issue 35, 14 March 1930, Page 21

"Bus-bar Aerial

[Hosp experimenters who are fortunate enough to have a room in which they can carry out their wireless experiments uninterrupted, are apt to use two or three sets in different parts of the room, and connect the aerial to one or the other as required. Wher the set is some distance from the lead-in, the trailing wire may get in the way, and prove very inconvenient.. A good system in such a room is to erect a "bus-bar" aerial. ‘This ‘is a very simple device, consisting of

two rod or other aerial insulators, one on each side of the room, joined by a piece of bare aerial wire pulled taut. A flexible connection, soldered to this wire at one end, is taken to the aerial lead-in. A number of flexible wires are then prepared, one end of each being fitted with a spade terminal and the other with a spring clip, specimens of which can be obtained at any wireless accessory shop. ‘The spring clips are soldered firmly to the ends of the flexible wires, and when it is desired, to connect a particular set, a lead is clipped on the bus-bar aerial, the spade end of the lead being joined to the set. The earth terminals of all sets can be kept permanently joined to the,earth lead, or a bus-bar earth wire can be run along one side of the room and used in a manner similar to the busbar aerial. This bus-bar scheme serves to keep loose aerial wires out of the way, and adds to the efficiency of reception by preventing unwanted capacity effects, which often creep in when long trailing aerial leads are used, ;