Practical_Antenna_Handbook_0071639586

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C o n t e n t s vii 12 The Yagi-Uda Beam Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277 Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279 Three-Element Yagi Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282 Yagi Antennas with Four or More Elements . . . . . . . . . . . . . . . . . . . . . 286 Yagi Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286 Wire Yagis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297 Multiband Yagis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 299 Yagis with Loaded Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301 Feeding the Yagi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302 Moxon Beam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306 Stacking Yagi Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308 Rolling Your Own . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313 Further Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314 13 Cubical Quads and Delta Loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315 Cubical Quad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315 Delta Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325 Diamond Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327 Concluding Thoughts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328 Part V High-Frequency Antennas for Specialized Uses 14 Receiving Antennas for High Frequency . . . . . . . . . . . . . . . . . . . . . . . 331 Beverage or “Wave” Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332 Phased Beverages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340 Snake or BOG Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341 Receiving Loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341 The EWE Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 358 Pennants, Flags, and the K9AY Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359 Longwire Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 360 15 Hidden and Limited-Space Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . 363 Hidden Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363 Limited-Space Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 368 16 Mobile and Marine Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 375 Mobile Antennas for VHF and UHF . . . . . . . . . . . . . . . . . . . . . . . . . . . . 375 Mobile Antennas for HF and MF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 376 Marine Radio Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 383 17 Emergency and Portable Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . 389 Improving Radiator Efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 391 Reducing Ground Losses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 391 Selecting the Right Polarization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394 Temporary Supports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 395 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 398
viii P r a c t i c a l A n t e n n a H a n d b o o k Part VI Antennas for Other Frequencies 18 Antennas for 160 Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 401 Vertical Monopoles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 401 Horizontal Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415 Inverted-L Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 416 Receiving on the Transmit Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 423 19 VHF and UHF Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 425 Ground-Plane Vertical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 426 Coaxial Vertical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 427 5 ⁄8-Wavelength 2-Meter Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 429 J-Pole Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 430 Collinear Vertical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 430 Grounds for Ground-Plane Verticals . . . . . . . . . . . . . . . . . . . . . . . . . . . . 433 Yagi Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 434 Halo Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 436 Quad Beam Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 436 VHF/UHF Scanner Band Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . 438 VHF/UHF Antenna Impedance Matching . . . . . . . . . . . . . . . . . . . . . . . 440 20 Microwave Waveguides and Antennas . . . . . . . . . . . . . . . . . . . . . . . . . 447 Waveguides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 447 Microwave Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 471 21 Antenna Noise Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 491 Noise Factor, Noise Figure, and Noise Temperature . . . . . . . . . . . . . . . 492 22 Radio Astronomy Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 497 General Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 497 Listening to “Ol’ Sol” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 498 Signals from Jupiter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 498 Ring Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 DDRR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503 Helical Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 505 Multiple Helical Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 506 Interferometer Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 508 23 Radio Direction-Finding (RDF) Antennas . . . . . . . . . . . . . . . . . . . . . . 511 Field Improvisation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 515 Loop Antennas for RDF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 516 Sense Antenna Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 517 RDF at VHF and UHF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 518 Fox Hunting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 518 Shortwave and AM BCB “Skip” RDF . . . . . . . . . . . . . . . . . . . . . . . . . . . 520 Doppler RDF Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 524 Wullenweber Array . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 525 Time Difference of Arrival (TDOA) Array . . . . . . . . . . . . . . . . . . . . . . . 525
Page 2 and 3: Practical Antenna Handbook
Page 4 and 5: Practical Antenna Handbook Joseph J
Page 6 and 7: Contents Preface . . . . . . . . .
Page 10 and 11: C o n t e n t s ix Switched-Pattern
Page 12 and 13: Preface My paternal grandfather was
Page 14 and 15: P r e f a c e xiii this book repres
Page 16 and 17: Acknowledgments As with other field
Page 18 and 19: Background and History Part I Chapt
Page 20 and 21: CHAPTER 1 Introduction to Radio Com
Page 22 and 23: C h a p t e r 1 : I n t r o d u c t
Page 24 and 25: Fundamentals Part II Chapter 2 Radi
Page 26 and 27: CHAPTER 2 Radio-Wave Propagation To
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C h a p t e r 2 : r a d i o - W a v
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Figure 2.29C Monthly averaged sunsp
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CHAPTER 3 Antenna Basics An antenna
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C h a p t e r 3 : A n t e n n a B a
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CHAPTER 4 Transmission Lines and Im
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C h a p t e r 4 : T r a n s m i s s
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Chapter 5 Antenna Arrays and Array
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C h a p t e r 5 : a n t e n n a A r
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A. B. C. D. E. F. G. H. Figure 5.9
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B. C. D. E. F. G. H. Figure 5.10 Gr
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High-Frequency Building-Block Anten
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CHAPTER 6 Dipoles and Doublets A co
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C h a p t e r 6 : D i p o l e s a n
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CHAPTER 7 Large Wire Loop Antennas
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C h a p t e r 7 : L a r g e W i r e
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CHAPTER 8 Multiband and Tunable Wir
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C h a p t e r 8 : M u l t i b a n d
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CHAPTER 9 Vertically Polarized Ante
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C h a p t e r 9 : V e r t i c a l l
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Quarter-wave vertical radiator Insu
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Directional High-Frequency Antenna
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CHAPTER 10 Wire Arrays When a singl
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C h a p t e r 1 0 : W i r e A r r a
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Wire 2 C h a p t e r 1 0 : W i r e
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CHAPTER 11 Vertical Arrays Despite
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C h a p t e r 1 1 : V e r t i c a l
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CHAPTER 12 The Yagi-Uda Beam Antenn
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C h a p t e r 1 2 : T h e Y a g i -
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CHAPTER 13 Cubical Quads and Delta
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C h a p t e r 1 3 : C u b i c a l Q
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Figure 13.5 Multiband quad “spide
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High-Frequency Antennas for Special
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CHAPTER 14 Receiving Antennas for H
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C h a p t e r 1 4 : r e c e i v i n
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351 Figure 14.12 Remote tuning sche
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CHAPTER 15 Hidden and Limited-Space
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C h a p t e r 1 5 : H i d d e n a n
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CHAPTER 16 Mobile and Marine Antenn
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C h a p t e r 1 6 : M o b i l e a n
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CHAPTER 17 Emergency and Portable A
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C h a p t e r 1 7 : E m e r g e n c
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Antennas for Other Frequencies Part
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CHAPTER 18 Antennas for 160 Meters
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C h a p t e r 1 8 : a n t e n n a s
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CHAPTER 19 VHF and UHF Antennas The
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C h a p t e r 1 9 : V H F a n d U H
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CHAPTER 20 Microwave Waveguides and
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C h a p t e r 2 0 : M i c r o w a v
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λ o = c / f 8 3× 10 m / s = 9 C h
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CHAPTER 21 Antenna Noise Temperatur
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C h a p t e r 2 1 : A n t e n n a N
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C h a p t e r 2 1 : A n t e n n a N
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CHAPTER 22 Radio Astronomy Antennas
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C h a p t e r 2 2 : R a d i o A s t
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Figure 22.9 Interferometer pattern.
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CHAPTER 23 Radio Direction-Finding
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C h a p t e r 2 3 : R a d i o D i r
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Figure 23.9 Adcock array RDF antenn
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Figure 23.11 Watson-Watt Adcock arr
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Tuning, Troubleshooting, and Design
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CHAPTER 24 Antenna Tuners (ATUs) Th
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C h a p t e r 2 4 : a n t e n n a T
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CHAPTER 25 Antenna Modeling Softwar
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C h a p t e r 2 5 : A n t e n n a M
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Figure 25.3B Bent dipole wire and s
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CHAPTER 26 The Smith Chart The math
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Figure 26.2 Normalized impedance li
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A Figure 26.3 Constant resistance c
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A Figure 26.4A Constant inductive r
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C h a p t e r 2 6 : T h e S m i t h
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D C B A Figure 26.5 Radially scaled
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0.165 Y ' 1.0 j1.1 G' 1.0 Y ' 0.2
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CHAPTER 27 Testing and Troubleshoot
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C h a p t e r 2 7 : T e s t i n g a
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Mechanical Construction and Install
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CHAPTER 28 Supports for Wires and V
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C h a p t e r 2 8 : S u p p o r t s
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CHAPTER 29 Towers At some point, th
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C h a p t e r 2 9 : T o w e r s 655
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CHAPTER 30 Grounding for Safety and
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C h a p t e r 3 0 : G r o u n d i n
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CHAPTER 31 Zoning, Restrictive Cove
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C h a p t e r 3 1 : Z o n i n g , R
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C h a p t e r 3 1 : Z o n i n g , R
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Appendices
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APPENDIX A Useful Math The material
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A p p e n d i x A : U s e f u l M a
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Appendix B Suppliers and Other Reso
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A p p e n d i x B : S u p p l i e r
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B.1.6 Rotators and Controllers Alfa
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Index Note: Boldface numbers denote
Page 768 and 769:
I n d e x 747 Binns, Jack, first ma
Page 770 and 771:
I n d e x 749 dipole (Cont.): slopi
Page 772 and 773:
I n d e x 751 grounding and ground
Page 774 and 775:
I n d e x 753 ionospheric propagati
Page 776 and 777:
I n d e x 755 maximum effective len
Page 778 and 779:
I n d e x 757 noise (Cont.): sky no
Page 780 and 781:
I n d e x 759 reactance: cancellati
Page 782 and 783:
I n d e x 761 standing waves: on an
Page 784 and 785:
I n d e x 763 transmission lines, 1
Page 786 and 787:
I n d e x 765 vertically polarized
Page 788:
I n d e x 767 Yagi antennas (Cont.)
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