long wave bandlongituclinal paritylongitudinallongitudinal currentlongitudinal magnetizationlongitudinal wavelooploop actuating signalloop antenna looploop backloop characteristicloop controlloop couplingloop currentloop current matrixloop difference signalloop feedback signalloop festloop gainloop impedance matrixloop transmissionloploranloran cloran chainloran chartloran dloran fixloran indicatorloran lineloran setloran stationlorentz forcelorentz forxe equationlorentz instrument landing systemlossloss angleloss compensationloss factorloss tangentlossev effectlosslesslossless linelossylossy lineloud speaker impedanceloudnessloudness contourloudness control compenasted volume controlloudness vevel equivalent loudness level