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Query: johnson
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A free online calculator for making all of the calculations required to design and build small transmitting loop antennas, also known as magnetic loops by 66pacific.com
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This is a hex beam designed for six meters. It has three elements with a turning radius of 54 inches. This antenna can be built from low cost materials available from the local hardware store. By WB3BEL
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Sams Photofact downloads - Schematics and Service Manuals for Radios, Amplifiers, More
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An experimental antenna similar to the TAK spiral antenna was evaluated for SWR response over the frequency range of 7.0 to 7.3 MHz, or the 40-meter band.
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Specialized, business and industrial radios
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Ham Radio T-Shirts, Caps, Mousepads, also vintage designs! Designs include logos from Amperex, Collins, Eico, Eimac, Gonset, Hallicrafters, Hammarlund, Heathkit, Johnson, Knight, Mars, National, Swan, Skywarn and others.
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Online calculators for toroid coil, air-core coil inductance, XL, XC, and more.
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Antique Radio Schematics and Service Manuals for Tube Radios
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Build an effective dipole antenna that needs much less space by adding two loading coils. This online calculator tells you how.
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Use this online calculator to determine the length of a quarter-wave antenna from the frequency. Both metric and English units of measurement are supported.
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Use this online calculator to determine the length of a full-wave loop antenna from the frequency. Both metric and English units of measurement are supported. Quarter-wave matching section lengths are also calculated.
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Use this online calculator to determine the length of a dipole antenna from the frequency. Both metric and English units of measurement are supported.
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The JSCARC, located at NASA's Johnson Space Center, Houston, Texas, supports the U.S. Space Program and the International Space Station.
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EB5AGV / EC5AAU Boatanchor collection. Useful data on TV-testers, Collins, Drake, Hammarlund, Hallicrafters, National, Heathkit, EF Johnson.
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Located in Johnson City, Tennessee - Washington County EM86.
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The Brandon Amateur Radio Society serves the ham radio community in eastern Hillsborough County Florida.
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Sams Photofact download Schematics and Service Manuals, Originals and downloads.
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An online calculator for designing and evaluating capacitors based on the capacitor's area, separation, number, and dielectric constant
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An online inductive reactance calculator, accepts as input Frequency and Inductance
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The amateur radio club serving Johnson County Tennessee and northeastern Tennessee and southwestern Virginia. Open to all licensed hams.