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Practical_Antenna_Handbook_0071639586

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766 I n d e x<br />

voltage standing wave ratio, 132, 134–135,<br />

136–138, 572, 576, 588–590<br />

W<br />

W1FV, 275<br />

W8JI, 274<br />

W8JK array, 277<br />

WA2WVL, 358<br />

WARC bands, 312, 314, 325<br />

water vapor vs. radio wave propagation, 9, 17,<br />

27, 42–44<br />

water wave analogy to radio wave<br />

propagation, 10–13<br />

Watson-ÂWatt Adcock array, 522–523<br />

wattmeters, RF, 603–613<br />

wave antenna (See Beverage or “wave”<br />

antenna)<br />

waveguides, 109, 447–470<br />

(See also microwave antennas;<br />

microwave waveguides)<br />

wavelength, 11–13<br />

in transmission lines, 116, 118–119<br />

units, 11–13<br />

in waveguide, 454–458<br />

in wires, 104–106<br />

in Yagi beams, 284–285<br />

WBZ radio station, 11–12, 159<br />

weather-Ârelated propagation phenomena, 28,<br />

34, 39–41, 42–44, 57<br />

Web resources, 743–744<br />

Welch, Daniel F., W6DFW, 525<br />

Wheatstone bridge, 590–592<br />

wide-Âaperture direction finder (WADF), 525<br />

WiFi, 3<br />

wind:<br />

force (load) due to, 656–660<br />

pressure, 657<br />

flat-Âplate impact pressure, 657<br />

speed, 657, 659<br />

zones, 663<br />

winding toroids, 542–543<br />

Windom, Loren, 226<br />

Windom antenna, 226–228<br />

windowsill antennas, 369–370, 372<br />

wire antenna construction, 628–638<br />

balun, 629, 631–633, 636<br />

center insulator, 629–634<br />

center support, 633<br />

common-Âmode choke, 633–634<br />

wire antenna construction (Cont.):<br />

connection to feedline, 629–634<br />

counterweight, 641<br />

door spring, 633, 638, 641<br />

drip loop, 633<br />

end insulators, 634–635<br />

halyard, 638–639, 641–644<br />

heat-Âshrink tubing, 633<br />

hoisting techniques, 638–640<br />

baseball, 639<br />

bow and arrow, 640<br />

fish line and reel, 639<br />

potato launcher, 640<br />

slingshot, 640<br />

twine, 639<br />

knots, 635<br />

messenger cable, 644–645<br />

pulley systems, 642–644<br />

rope (cordage), 634, 635, 637–639<br />

safety, 625–628, 640, 641<br />

soft-Âdrawn copper, 630<br />

solder and soldering, 629–632<br />

strain relief, 629, 633, 644–645<br />

twin-Âlead folded dipole insulators,<br />

636–638<br />

weatherproofing, 632–634<br />

wire gauge and type, 630, 641<br />

wireless, 3<br />

nodes, 6<br />

wireless communications services, 701<br />

wireless telegraphy, 3<br />

Wolf number, 49<br />

Wonder Bar antenna, 197<br />

wood preservation, 288, 291–292<br />

World Administrative Radio Conferences<br />

(WARC), 4<br />

Wullenweber array, 525–526<br />

WWV radio station propagation forecasts,<br />

50, 58<br />

WWVH radio station propagation forecasts, 50<br />

X<br />

x-Âray radiation, 48<br />

Y<br />

Yagi antennas, 277–314<br />

advantages, 278–279<br />

aluminum oxide suspension, 290

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