For the QRP K2, another good power option is an AGM lead-acid battery in
7 to 40 amp range, a multi-level charger (Battery Tender or Battery
Tender Jr for the smaller batteries, Motorcycle Accesories Warehouse),
and a 5-10W solar panel (EBay, Northern Tool) with Don Brown's
controller for backup, all hooked together with Anderson Power Poles.
You will be free of RF hash, and as a bonus can operate during power
outages.
73,
Leigh/WA5ZNU
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