[Elecraft] Supply Voltage Range Elecraft K2 transceiver

[N7UN]

Or use a step-down adjustable voltage regulator from
http://dimensionengineering.com/DE-SWADJ3.htm 

Popular among the R/C crowd, I've used this regulator (set to 13.0v) for
over a year now without any problems to power my K2 from a "older" 4S LiPoly
battery (fully charged to 16.4v and a flat operation voltage of 15.6v).  The
battery has still got a lot of re-charge cycles left so don't want to
replace it yet with an A123 battery.  

Plus, I add fuses for both leads and a crowbar diode for reverse polarity
protection.  Everything fits in a 2.5" x 1.5" x 1.15" plastic box.  

Email me directly if you want more information.  73, Guy/N7UN

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