Practical_Antenna_Handbook_0071639586

24.07.2018 Views

A p p e n d i x B : S u p p l i e r s a n d O t h e r R e s o u r c e s 743 US Tower Corporation (freestanding crank-up towers, mobile and concealed towers and masts) 1099 West Ropes Avenue Woodlake, CA 93286 (559) 564-6000 www.ustower.com E-mail: sales@ustower.com XX Towers, Inc. (towers, tower installation services, antenna replacement and repair) 814 Hurricane Hill Road Mason, NH 03048 (603) 878-1102 www.xxtowers.com E-mail: info@xxtowers.com B.2 Web Resources B.2.1 Used Antennas, Accessories, and Equipment http://swap.QTH.com www.eham.net/classifieds www.QRZ.com www.secondhandradio.com B.2.2 Propagation Forecasts, Beacons, and Archives http://dx.qsl.net/propagation http://prop.hfradio.org www.dxinfocentre.com www.qth.com/ad5q www.hamradio-online.com/propagation.html www.N0/HR.com/radio_propagation.htm www.wcflunatall.com/NZ4O3.htm www.eham.net/DX/propagation www.ncdxf.org/beacon/beaconschedule.html www.swpc.noaa.gov/ www.K7TJR.com/radio_prop1.htm www.voacap.com www.solarcycle24.com www.solen.info/solar/cyclcomp.html (graphical comparison of solar cycles 21–24)

744 A p p e n d i x B : S u p p l i e r s a n d O t h e r R e s o u r c e s B.2.3 RF Exposure Tutorials and Calculators http://hintlink.com/power_density.htm (RF near-field calculator) www.sss-mag.com/rfsafety.html http://vernon.mauery.com/radio/rfe/rfe_calc.html (N7OH amateur band calculator) www.wirelessconnections.net/calcs/rfsafety.asp (wireless RF calculator) B.2.4 Free Online Calculators, Tutorials, and Other Utilities www.AC6LA.com (Smith chart, transmission line, Moxon rectangles) http://W8JI.com/antennas.htm (tutorials on a wide variety of antenna topics) http://tools.rfdude.com (Smith chart) www.saarsham.net/coax.html (coaxial cable specs, line loss calculator) www.physicsclassroom.com (tutorials and animations, including waves, optics) http://www.srrb.noaa.gov/highlights/sunrise/sunrise.html (sunrise/sunset calculator) www.gpsvisualizer.com/calculators (GPS and great circle calculators) www.seed-solutions.com/gregordy/Software/SMC.htm (series-section matching calculator) http://fermi.la.asu.edu/w9cf/tuner/tuner.html (T-network antenna tuner simulator) www.VK1OD.net/calc/tl/tllc.php (transmission line loss calculator) http://www.isvr.soton.ac.uk/SPCG/Tutorial/Tutorial/Tutorial_files/Web-basics -frequency.htm (wavelength and frequency visualizations) http://k7nv.com/notebook/ (antenna, tower, and rotator topics)

A p p e n d i x B : S u p p l i e r s a n d O t h e r R e s o u r c e s 743<br />

US Tower Corporation (freestanding crank-up towers, mobile and concealed towers<br />

and masts)<br />

1099 West Ropes Avenue<br />

Woodlake, CA 93286<br />

(559) 564-6000<br />

www.ustower.com<br />

E-mail: sales@ustower.com<br />

XX Towers, Inc. (towers, tower installation services, antenna replacement and repair)<br />

814 Hurricane Hill Road<br />

Mason, NH 03048<br />

(603) 878-1102<br />

www.xxtowers.com<br />

E-mail: info@xxtowers.com<br />

B.2 Web Resources<br />

B.2.1 Used <strong>Antenna</strong>s, Accessories, and Equipment<br />

http://swap.QTH.com<br />

www.eham.net/classifieds<br />

www.QRZ.com<br />

www.secondhandradio.com<br />

B.2.2 Propagation Forecasts, Beacons, and Archives<br />

http://dx.qsl.net/propagation<br />

http://prop.hfradio.org<br />

www.dxinfocentre.com<br />

www.qth.com/ad5q<br />

www.hamradio-online.com/propagation.html<br />

www.N0/HR.com/radio_propagation.htm<br />

www.wcflunatall.com/NZ4O3.htm<br />

www.eham.net/DX/propagation<br />

www.ncdxf.org/beacon/beaconschedule.html<br />

www.swpc.noaa.gov/<br />

www.K7TJR.com/radio_prop1.htm<br />

www.voacap.com<br />

www.solarcycle24.com<br />

www.solen.info/solar/cyclcomp.html (graphical comparison of solar cycles 21–24)

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