1922: Pioneer - The police in Chicago experiment with a radio telephone which broadcast at a frequency just above the AM radio band.
1940s: Horseback - The US Army Signal Corps communicate via radio in the field during wartime.
News from PERRY'S CAVE - You can easily search this blog by entering key words in the search box above
About Me
- Perry
- The above is a photomosaic picture. I am a retired auditor and tax accountant. My wife Valeta and I live along the Front Range of the beautiful Colorado Rocky Mountains.
A picture of my cave
ga
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