Page 88 - RTH3BA Preview

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Doppler shift 242 enhancement mode 273
Doppler shift equation 243 equalising resistors 193
double conversion superheterodyne 356 equation for capacitive reactance 109
DPO 532 equation for inductance 118
DSO 532 equivalent circuit of a quartz crystal 307
DSP 440 external induction loss 158
DSTAR 581 external intermodulation 403
DTV weak signal 398 F
dual ferrite isolator 385
dual gate MOSFET used as a mixer 347 factors determining capacitance 92
dual role of the BFO and carrier oscillator factors determining capacitive reactance 108
duo diodes and triodes 216 fan dipole 475
duplexer 381 Faraday’s law 75, 154
dynamic microphone 147 Fast Fourier transform 446
FEC 436
E feedback 212
feedpoint impedance 462
earth leakage detector 205 ferrite beads - parasitics 452
echolink 587 ferromagnetism 69
eddy currents 156 FFT 446
Edwin Howard Armstrong 218 field programmable gate array 447
effects of an electric current 21 fields about an antenna 232
efficiency of shunt regulators 254 filter curves 376
electric field around charged particles 10 finding the instantaneous values of a sine
wave 596
electric shock 44
finite impulse response 446
electricity 7
FIR filter 446
electrochemical series 145
five-eight wavelength 466
electrolytic corrosion 145
flat topping 453
electromagnet do it yourself 67
flywheel effect 180
electromagnetic spectrum 238
FM modulator 407
electromotive force or voltage 19
FM transmitters 419
electron flow 20
FM wave power distribution 412
electron flow versus conventional flow
folded dipole 471
electronic regulation 194
forward biased PN junction diode 251
electrons and protons 9
forward error checking 436
electroscope 14
Foster-Seeley discriminator 417
emitter stabilisation 298
Fourier Transform 444
emitter-follower 266
FPGA 446
energy in a magnetic field 121
energy stored in a capacitor 113
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