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Show Improves"' iadio Service. A complete ritdio receiving station, making use of ai Tesla induction coil, in place of the U'fuak plain frame aerial, has been placed! on the market by a French company, says Popular Mechanics Me-chanics Magazine. The set consists of the Tesla coil, a tuner and, an amplifier. ampli-fier. The first mentioned has three coils of wire. The' two inner ones revolve re-volve independently, one within the other, while tbe outer on.? is fixed. The three are supplied with the necessary switches, and. the two in her ones are also provide.! with knobs' for use in handling thjm. Good re:-lilts are obtained ob-tained with the set, especittJiy in elinv inating stations using the'samS wave lengths. |