O.D. Williams (N7OZH), a master in the art of teaching others radio communications and emergency preparedness, and who provides training on several nets in SLC -- the MARA Net, the ERC Net, the SLC Foothill Net and other nets when he is requested, maintains the blog SLC MARA & Foothill Ham Radio.
O.D. has recently posted an article regarding Ohm's Law and Battery Life that provides great information on helping you calculate how long your battery will last based on voltage and wattage use.
Please visit the link below to learn more, and browse through his blog for other really good communications preparedness information.
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