What kind of solar panels will be necessary for backpacking, handheld and QRP radios?
A CTSolar 10.4W Backpack solar panel is ideal for this purpose. You will get 750 mA in full sun. Use a charge controller and a small 8 AH (amp-hour) or so sealed lead acid battery. Using this setup you’re good for many hours of operation. You can also charge consumer electronic devices as well. CTSolar produces just such a powerpack that will run your amateur radio as well as consumer electronics needs. This unit features low-voltage disconnect to protect your battery as well as state-of-charge indicators to help you judge battery capacity. We also market a 3A lithium battery pack in 6AH and 12AH capacity. This unit is incredibly lightweight and versitile.