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The first ten transceivers Swan produced were serial numbered from 101-1 to 110-1, with the first nine being model SW-120 operating on 20 meters (14 MHz), and the tenth, 110-1, being the first SW-140, operating on 40 meters (7 MHz). The SW-175 then covered the 75 meter band (3.8 MHz).
The 20-meter or 14-MHz amateur radio band is a portion of the shortwave radio spectrum, comprising frequencies stretching from 14.000 MHz to 14.350 MHz. [1] The 20-meter band is widely considered among the best for long-distance communication ( DXing ), and is one of the most popular—and crowded—during contests . [ 2 ]
Maplin Electronic Supplies was established in 1972 as a mail order business by Roger Allen, Sandra Allen and Doug Simmons. The company started in a bedroom at the Allens' home in Rayleigh, Essex, after the two electronics enthusiasts were disappointed by the complexity and poor availability of existing electronic component suppliers.
Here are our favorites on sale for Black Friday, including Keen sandals, Allbirds sneakers, and noise cancelling headphones. 20 products AOL editors have actually tested that are on sale for Black ...
Shortwave bands are frequency allocations for use within the shortwave radio spectrum (the upper medium frequency [MF] band and all of the high frequency [HF] band). Radio waves in these frequency ranges can be used for very long distance (transcontinental) communication because they can reflect off layers of charged particles in the ionosphere and return to Earth beyond the horizon, a ...
A 2021 study found that the treadmill is the most effective cardio machine for weight loss. A trainer explains why—and reveals the best treadmill workouts.
The hit Al-Shaair laid on Lawrence did not leave the QB unharmed. In the second quarter of Sunday's Texans-Jags game, with the Texans holding a 6-0 lead, Lawrence scrambled on second-and-7 near ...
Kathrein-Werke KG is a German manufacturer of antenna systems and related electronics. The company was founded in Rosenheim (Upper Bavaria) in 1919 and is still headquartered there. [1] It is the world's oldest and largest antenna manufacturer, valued at about $1.8 billion in 2015. [2]