OCR Text |
Show Good Ground Clamp Is Important Attachment The unseen is usually, slighted. In radio this applies especially to the ground connection for the receiving set. The aerial and lead-in wires are usually given the best of attention, while the ground is liable to he more or less of a makeshift, and once installed, in-stalled, forgotten. A good ground connection is as Important Im-portant and vital to the operation of your receiver as the aerial. The cold water pipes and the heating system make an efficient source of ground, providing a good contact is made with the metal of the pipes. Simply wrapping wrap-ping the bare wire around the outside of the pipe a few times does not give enough contact. The pipe should be filed or scraped until a bright surface Ground Clamp in Half-Moon Shape to Fit Over the Pipe. Is obtained, and then a wire securely wrapped around the pipe a number of times and soldered. As pipes are usually tucked away In Inaccessible places It Is often difficult to make a good connection in this manner. man-ner. The most convenient and the best connection can be secured by the use of a ground clamp. The type of ground clamp Illustrated can be used without spoiling the appearance ap-pearance of the pipe or the trouble of obtaining a clean metal surface. It is in a half-moon shape to fit over the pipe, with several notches on the inside in-side to keep the clamp in one position antl a threaded screw on the other side. The clamp can be adjusted by tightening up the screw with the fingers, fin-gers, the connection between the clamp and the metal being made as the point or the screw bites Its way Into the metal, Insuring a positive metal J contact. |