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Radio Record, Volume II, Issue 11, 28 September 1928, Page 27

OME listeners use a buried "earth" instead of the conventional water pipe, even though the latter is available. If there is any doubt as to the success of the buried "earth," it is quite easy to test the earth connectnection, the best method being the comparative one. All y.u need for the purpose is a fairly long length of flexible wire, or of ordinary wire as used for coils if flexible wire is not obtainable. First of all, tune in your set to a fairly weak signal and listen carefully to the strength of reception, preferably during a talk. Then disconnect the present earth lead from the set and join the temporary flexible wire there, the other end of this being taken to a water tap or some other really good earth connection which can conveniently be joined up for the purpose of the test. (Make the connection to the new earth as good as possible, or otherwise the test will necessarily be inconclusive.) It may be necessary to retune a little on the set owing to the different length of lead in the earth wire, but if* your present earth conmection is really poor the new temporary lead will have the effect of improving reception considerably. Consequently you should. either make this a permanent connection, or else overhaul the old lead, which is obviously in need of renewal.