Page 74 - RTH3BA Preview
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A saturation 281
Amplitude modulation 334, 348, 357
Alternating Current 75 AM diode receiver 349
AC generator through one cycle 79 balanced ring modulator 359
cycles per second 77 bandwidth of a AM (DSB) signal 337
deriving the root mean square 84 block diagram of a single sideband -
Faraday's Law 75, 154 transmitter 361
peak and RMS voltage conversion 83 complete SSB transceiver 367
root mean square 82 conversion efficiency (mixer) 355
rotating coil within a magnetic field 79 curing image interference 355
simplified AC generator 78 definition of amplitude modulation 348
sine wave 81 double conversion superheterodyne 356
voltage over one cycle 82 dual gate MOSFET used as a mixer 347
dual role of the BFO and carrier oscillator -
Amplifiers 279
in SSB 366
amplifier efficiency 281
frequency changer 336
buffer amplifier 293, 297
frequency conversion 335
cancellation of even harmonics 289
high and low level modulation 338
class A operating curve 282
Image interference 354
class A, B and C on one graph 286
Schematic diagram of a mixer 346
class AB 285
Selectivity 350
class B - operating curve 284
Sensitivity 350
class B amplifier characteristic curve 284
sideband power in AM system 338
class C amplifier characteristic curve 285
Single sideband 341
class C operating curve 284
single tone test 343
classes of amplifier 280
superheterodyne receiver 352
complementary push-pull power amplifier 291
trapezoid patterns 341
complementary symmetry BJT amplifier 289
two-frequency carrier oscillator 364
cutoff 280
two-tone test signal 342
frequency multiplier 292
waveforms on an Oscilloscope 340
frequency multiplier (doubler) 292
what is AM
harmonics 289
intermediate frequency amplifier 290 Antennas 456
linear portion 281 antenna gain 461
operating angle 280 basic radiation patterns 481
other classes of amplifier 293 cable entry to shack 474
push-pull amplifiers 287 capacitive hat loading 465
push-pull PNP BJT amplifier 288 co-linear antenna 478
push-pull RF power amplifier 291 corner reflector 479
push-pull triode amplifier current distribution on an OCFD 477
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