OCR Text |
Show ETHER WAVES Never touch the inside of a set when it is in operation. The most common source of trouble within a radio set is in the tubes or in the sockets. The direction in which the antenna points affects the loudness of the signals sig-nals received. An aerial is not essential with a sensitive sen-sitive set employing two stages of radio frequency amplification. When using the variocoupler as a single circuit set reverse the flckler connections if it will not oscillate. Coils for high frequency currents should always be wound with nonmagnetic nonmag-netic material, preferably copper. The ground is one of the most important im-portant portions of the radio circuit. Crystal detectors operate as long as the detector is in good condition. Excessive resin from solder can be 'removed with alcohol and a soft cloth. If a listener is bothered by having the station programs fade the cause may be with the aerial of the receiving receiv-ing set. If the antenna becomes loose and swings in the wind it "will often cause weak signals. |