If you have used a cellular telephone or the door control of the garage at some time, it has been thanks to Al Gross. Intelligent engineer, Gross invented the walkie-talkie when he was only an adolescent in 1938. In 1948, he established the Citizens' Band radio. In 1949, he invented the telephone pager. His other inventions include the basics of cordless and cellular telephony. .
Al Gross was born in Toronto in 1918 and died on December 22, 2002 at the age of 82. He discovered his passion for radio in his earlier years. At the age of 9, on a steam- boat trip, the ship's radio operator let him listen to the wireless. Ever since that day he became obsessed with radio technology that he even turned his basement into a radio headquarters with equipment found in junkyards. At age 16, he obtained his amateur radio license. His interest and ability had increased by the time he entered his high school in 1936. Determined to use the unexplored frequencies above 100 MHz, Gross set about inventing a mobile, lightweight, hand-held two-way radio. In two years, Gross had invented and patented the "walkie-talkie". The habit of Gross to walk and to speak, at the same time, inspired the name for its invention. He designed it so that the two-way radio can be operated within a certain distance of each other.
Though there was not a lot of demand for the walkie-talkies in the civil life at the end of the 1930's. The military saw its potential and it hired Gross for the Office of Strategic Services. Gross designed both a ground unit and an airborne unit which communicated with each other via radio waves in a manner which was almost impossible to monitor. The units had an effective range of about 30 miles. The transceiver of the ground unit weighed only 3 1/2 pounds, with a collapsible antenna, and was powered by two B and two D batteries. It could easily be carried and hidden by a soldier on hostile ground. It was very successful and it was used thoroughly during World War II.
From the regular telephone to walkie talkies, to fax machines, to mobile phones, pagers, cellular phones to communicating through the internet. ... The walkie talkies were also good to have. The power of each walkie talkies would reach a certain distance. ... The person would be able to hold the walkie talkies and speak into them. Now a day, the walkie talkies have a better range of distance. ...
Butler Analytical Plotter ...a 3d map making system invented by Uno Vilho Helava in 1957 Andromonon ...a 3 wheeled vehicle invented in 1851 by Thomas Turnbull Anti-Gravity Suit ...invented by Wilbur Rounding Franks in 1941, a suit for high altitude jet pilots Automatic ...the first steam foghorn was invented by Robert Foulis in 1859 Automatic Machinery Lubricator ...one of the many inventions invented by Elijah McCoy, the "Real McCoy" Automatic Postal Sorter ...in 1957, Maurice Levy invented a postal sorter that could handle 200,000 letters an hour Basketball ...invented by J...
Radio has helped revolutionize the way communication is today by influencing other pieces of technology like walkie-talkies, cell phones, and other forms of wireless communications. ... Stubblefield of Murray, Kentucky, is rumored to have transmitted voice via radio as early as 1892."4 He didn't want to market his invention because he wanted to improve upon it. ... I can understand where he's coming from by wanting to perfect his inventions, but I think that he should have broaden his horizons a little bit more. ...
Preceding the depression and WWII was a great time of prosper and new innovation, with many new inventions that were later applied to the Canadian war effort. One such invention was developed by Armand Bombardier of Quebec. ... Another Canadian inventor that developed inventions prior to WWII but partook in the effort was that of Reginald Fessenden. ... This advancement played a great role, as it paved the way for the portable two-way radios known as walkie-talkies, and the "wirephoto", an invention by scientist and special agent Sir William Stephenson, known as "Intrepid" throughout his under...
Introduction Wireless technology exists to enhance the human sensory feelings to give people the opportunity to be heard, to listen and be educated, to recognize and be recognized. It is a type of technology that allows you to express yourself anywhere, anytime toward achieving a greater level of...
