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The Ten Cent Modification You Can Do to Double Your Radio's Range - Code Green Prep. Adding a simple piece of wire to your walkie-talkie could double its range.
Some things in life you can never have too much of. But for this article, we’ll concentrate just on radio range/efficiency! There are many ways to boost the range of your two-way radios. We write about this topic regularly (please see our complete section on communication related topics to access these articles) and basically, the suggestions we offer fall into one of two categories – either getting a more powerful radio transmitter and more sensitive radio receiver, or boosting the effectiveness of your antenna. Between these two choices, improving the effectiveness of your antenna is always the better approach. One more important issue – the more powerful your signal, the further it goes, and the greater the number of people who might receive it. Enough introduction. How a Piece of Wire Can Double Your Radio Range This device is simply a piece of wire which dangles down off your hand-held radio transceiver.
Winscape: Absolutely incredible window monitor. Award-winning A/C uses old idea, new materials. If thirst is crucial to knowledge, then one crucial step in the evolution of air conditioning was born in the 1970s, when Ron Judkoff was a hot, thirsty Peace Corp volunteer in Kedougou, Senegal, one of the warmest places on Earth.
"That's where I really saw the effectiveness of evaporative cooling," said Judkoff, director of Buildings and Thermal Systems at the U.S. Department of Energy's National Renewable Energy Laboratory (NREL). Judkoff was talking about DEVAP, NREL's Desiccant-Enhanced Evaporative (DEVAP) system that works in any climate and achieves comfortable cooling while saving 40% to 80% of the energy use of a conventional air conditioning (A/C) system. "The Senegalese would make these clay pots to keep water in," he recalled. "The pots didn't feel wet on the outside, but they were semi-permeable. Learning from Indigenous Peoples and the Ancients NREL Takes a Different Direction Simultaneously, adjacent air passages are in thermal contact with the flowing desiccant. Opposed Piston Opposed Cylinder Engine. Log In | About Us | Contact | Advertise to the ETV Newsletter Sign In | Support Related Videos Now Playing: RC Airplane Glove Controller Reaching out to STEM Students Robots Converge by Land and Sea at Unmanned Systems Show Drones, Quadrotors and more Unmanned Aerial Vehicles Protector Robot Uses Mini-Flail to Clear Bombs.
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