Useful Brackets

Radio Record, Volume II, Issue 38, 5 April 1929, Page 9

Useful Brackets

Advice to Builders [a the assembling of wireless receivers the need often arises for a small bracket which can be used for mounting condensers, certain kinds of drum dials, and other components. A suitable bracket, sufficiently strong for the purpose, but compact enough

to place in the small space which is often available, is difficult to make. Two forms of bracket are available to the home builder. Aluminium angle bars in the form of a strip which can be cut easily and drilled in any desired manner can be obtained cheaply at any large hardware establishment. Aluminium brackets of this kind possess the advantage of being very strong and light. If included in the receiver circuit they possess high electrical conductivity, and are lacking in magnetic properties, an important feature when the brackets are used to mount certain kinds of audio frequency amplifying transformers. Another useful bracket is the angle bracket, which forms part of model building kits of the meccano_ type. These brackets are of steel, and are accurately formed and drilled. If they are employed it should be remembered that they , possess marked magnetic properties. If several audio frequency transformers were mounted on a single bracket, it is probable that ay undesirable reaction, resulting in a tendency for the receiver to "howl," would be set up between them along the bracket.