Index

A

A index 35
Active antenna 208–209
AGC 116–118
AM 73–77
AM broadcasting 210–214
AM demodulator 132–134, 135
Amplifiers 155–160
Amplitude modulation 73–77
bandwidth 77
transmitter 163–166
AMPS 246
Angle of radiation 28, 182–183
Antenna: 
active 208–209
angle of radiation 182–183
bandwidth 178–180
dipole 197–200
directivity 180–182
end fed wire 200–201
ferrite rod 195–196
folded dipole 198–199
gain 180–182
ground plane 205
height 183
helical 206
impedance 180
loaded 206
long wire 201
parabolic reflector 207–208
polar diagram 181–182, 203
short 206–207
system 183
vertical 204–206
yagi 201–204
Apogee 236
Armstrong, Edwin 9–10, 12
ASCII 84–86, 87
Atmosphere 20
Atmospheric absorption 41
Audio clipping 175–177
Audio compression 174
Audio image 104
Audion 8
Aurora 34
Automatic gain control  ...

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