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Common Impedance in Earth
Interference and Noise
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adjusted aerial amplifier amplitude anode applied attenuation audio frequency audio-frequency balanced band-pass band-pass filter bridge capacity carrier frequency cathode characteristics coil component condenser connected constant constituted corresponding coupling cross-talk curve cut-off frequencies decibels detector determined diode direction distortion earth effect elements equal equation equivalent feedback fourpole Frequency Modulation grid harmonic high-pass filters horizontally polarized i.f. filter I.R.E. PROCEEDINGS image impedance impedance looking inductance input impedance insertion loss interference kc/s load loop low-pass filters m-type matrix maximum Mc/s measured meter method mid-band mid-series mid-shunt modulation negative noise normal obtained ohms parameters pass band phase shift polar diagram polarized waves programme propagation Radio ratio reactance receiver resistance screen series arm shown in Fig shunt arm sideband signal frequency structure superheterodyne receiver terminals 1,1 terminals 2,2 transfer vector transformer transmission transmitter triode tuned valve vertically polarized voltage voltmeter volts zero