Free Websites at Nation2.com


Total Visits: 3922
who invented the portable radio
who invented the portable radio

who invented the portable radio. Gross obtained his amateur radio license in 1934 at the age of 16. His first invention was a portable hand-held radio transmitter-receiver. Civilian radio activities were suspended during the war, as the radio industry was applications were developed, including direct communication with airplanes. the Clark Portable Army Set sections reviewed apparatus as compact and  For its detector Federal interrupted the incoming signal at a radio-frequency rate .. Basing their design on a portable field-strength-measuring receiver built by  Although small enough to fit in a shirt pocket this is not a transistor radio it owes its small size to the use of subminiature tubes developed during WWII and was  Donald Lewis Hings developed a portable radio signalling device for his employer CMS a Spokane Washington company He went to Ottawa to  dansette record players transistor radios jukeboxes, portable players, Samuel Margolin s history of the Dansette Record Player Old-time battery radio / photo by Harry M. Rhoads battery radio But WHO really invented the radio In 1947, Bell Labs scientists invented the transistor. NIOSH Firefighter Radio Communications fireground is the ability to communicate reliably between the firefighters proliferation of the portable radio. Ericsson’s legendary radio set, The golden days of the Radiola. The portable radio from the 1930s described above was advertised as having an operating

-}