g network, 188-191 Home subscriber server, 278 Maximum usable frequency, 40 HomeRF, 282, 289-290 Maxwell, 5 MDS, 177 Meteor burst communication, 48 IF amplifier, 148 Meteor scatter, 48 IF breakthrough, 163 Meteor showers, 49 IF filter, 148-151 Meteors, 48 Image response, 128, 131 Microcell, 255 IMEI, 264 Minimum discernible signal, 177 Impedance antenna, 78 Minimum shift keying, 64 Impedance feeder, 85 Mixer, 144-146, 181 Impedance output, 193 Mixer diode ring, 144 IMSI, 264 Mixing process, 123 Intermodulation, 191 Mobile equipment ID, 278 Intermodulation distortion, 175 Mobile phone, 257 International mobile equipment Mobile station, 264 identity, 264 Mobile switching centre, 261, 264 International mobile subscriber Mobile telephone exchange, 261 identity, 264 Modem, 62 Ionization, 31 Modulation, 51 Ionosonde, 41 amplitude, 53-56 Ionosphere, 31-34 frequency, 58 Ionospheric disturbances, 43 index (AM), 57 Ionospheric propagation, 35 index (FM), 60 I-Q modulator, 66 phase, 63, 64 IS-95, 269-273 pulse, 67-71 Isotropic source, 80 pulse amplitude, 68 pulse code, 69 pulse width, 69 Kemp, 7 Modulator I-Q, 66 Modulator phase, 202 Morse, 52, 53 Latour, 10 Morse demodulator, 152 LC filter, 165 Morse, Samuel, 4 Levy, Lucien, 11 Morse telegraph, 4 Local oscillator, 146 Morse transmitter, 194 Lodge, Sir Oliver, 6 MPT 1327, 240 Log periodic antenna, 105-107 MS, 264 Loop antenna, 113 MSC, 261 Lowest usable frequency, 41 MSK, 64 LUF, 41 MTX, 261, 264 MUF, 40 Multiple reflections, 38-40 Macrocell, 255 Multiplier frequency, 185 Magnetic field, 19, 20 Murray code, 63 Marconi, 6, 7 Narrow-band FM, 59 Master oscillator, 179 NBFM, 59 Index 295 Newton, Isaac, 221 Polarization, 24, 25 NMT, 248 Polarization, antenna, 78 Node B, 277 Power, 186, 187 Noise, 169 Pre-emphasis, 61, 207 Noise factor, 173 Programmable divider, 138 Noise figure, 173 PSK, 64 Nordic mobile telephone, 248 Pulse amplitude modulation, 68 Pulse code modulation, 69 Pulse modulation, 67-71 Oersted, 4 Pulse width modulation, 69 OFDM, 75 PWM, 69 Ohm, 4 Orbit satellite, 22