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עמוד:368

STM-1 352 SSB 94-96 SS 7 346 Space-division switching 334 SONET 351 SNR 143 slope detector 170 sky waves 190 simplex 39 Time slot 254 , 338 Time division switching 338 Thermal noise 141 THD 129 TDM 252 , 338 TCM 281 , 300 twin lead 50 Transducer 183 TRF 111 Touchtone 315 Trib 255 UTP 281 , 287 Up conversion 124 UHF 100 VCO 164 VLF 100 VF 100 VHF 100 VE 360 VDSL 297 VCO 153 VC 353 Wien wavelength 47 ר ' WLL 326 Wien Bridge Oscillator 64 White noise 141 Wein yagi 53 PM 152 PDH 358 PCM 209 , 224 , 230 , 251 PAM 209 , 249 , 251 PABX 318 PA 165 PWM 209 , 250 Pulse train 248 Pulse 315 PSK 268 , 273 PPM 209 , 250 Power amplifier 165 Popov 19 Quantization 211 , 221 QPSK 276 , 281 QAM 277 Q 113 RF 85 residential gateway 361 reconstruction 211 rate 238 range 58 RADSL 297 RZ 225 Alternate routing 343 Adaptive routing 343 Routing 340 Ringback 314 Sensitivity 125 SDSL 297 SDH 351 , 354 Scrambling 300 Sampling 211 Sample and hold 215 Signaling 315 Short waves 191 Shield 139 SHR 354 SHF 100 Shanon 239 FTTN 324 Ground waves 188 Hum 138 HF 100 HDSL 297 half duplex 40 ITUT 233 ITU 280 , 329 ISDN 316 IP 360 Rejection 128 Image frequency 121 IF 117 , 127 IETF 362 IDSL 297 Keying 264 loudspeaker 38 Loop 290 Local loop 321 Limiter 173 modulator 45 modulated 47 Mixer 116 MF 100 MDF 328 Marconi 19 frequency 199 multiplexing 246 , 252 multiplexer 254 monopole 52 modulation index 76 Nyquist 238 NT 316 NRZ 225 network interface 333 אותיות יווניות ? 27-28 ? 86 , 289 ? 48 ? 60 , 157

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