During years of treasure hunting for radios, I occasionally found a nice clock I couldn't pass up and eventually realized that I was a clock collector too. The use of colorful plastics, glass, chrome and woods in clocks was similar to methods used in radio designs. Browse through many cloc...
During the early 1920’s Merl intercepted an emergency radio message from the Italian expedition to the North Pole that were stranded. Merl relayed the message to the Italian embassy in Washington, DC who in turn got the Italian government to send out a rescue team. While Merl was stationed ...
During the 1930's, Supreme Instruments supplied a Free Reference Point System Disk with many of their vacuum tube testers and radio analyzers. This two sided disk allowed easy identification of which tube pin jacks on the tester to use by rotating the inner wheel to the tube number under test...
Of all radio manufacturers during the fabulous Art Deco design years of the 1930s and 1940s, one company that has always shone brightly is the Zenith Radio Corporation of Chicago. With their beautiful and varied cabinet designs and high quality electronics these sets have become treasured collectib...
Even though mentioned in other places the Enigma breaking got out in the mid 1970’s thanks to RAF and MI6 Officer Frederick W. Winterbotham CBE, who had during WWII a not so small part in the organisation of the distribution of “Ultra” intelligence. So he wrote a book “The Ultra Sec...
during the day spot moved the sky. He wondered whether the hiss had anything to with the sun.more careful study seemed to deepen the mystery. The timing of the unexplained hiss changed day by day. The peak of the noise came exactly four minutes earlier every day.Determined to find the ...
Yaris's in-car experience with the 8G+128G Octa Core 2 Din Radios Carplay, a state-of-the-art multimedia player designed specifically for the 2005-2012 model years. This device is not just a simple upgrade; it's a complete transformation of your vehicle's entertainment and navigation ...
Crystal radios were the first widely used type of radio receiver, and the main type used during the wireless telegraphy era. Sold and homemade by the millions, the inexpensive and reliable crystal radio was a major driving force in the introduction of radio to the public, contributing to the...
During WW2, the Hell system was used with transmitters with an output power from several watts to 1 Megawatt! The radio range with Hellschreiber was similar to that of CW "Morse" telegraphy (ref. 1). Ref. 2A-2F provide a general overview of German military radios, 1920-1945. Ref. 294...
For TDD systems, TX is not active during the RX time, and so this degradation source is not included. 6.3 Phase Noise The phase noise of the clock for the AFE7686 ADC mixes with any signal at the receiver and generate energy at the wanted signal. This is equivalent to reciprocal mixing...