I volunteer as a ski patroller at a ski resort in northern Vermont.  Like many other ski resorts, we monitor Family Radio Service (FRS) Channel 9-11 for skiers who might get lost or hurt within our resort's boundary or sometimes outside the resort boundaries.  Due to the FCC restriction that FRS channels are limited to only a half watt (0.5w) they have very limited range.  So in order to monitor channel 9-11 effectively, we keep FRS radios plugged in all over the mountain in all of our ski patrol huts where there are always patrollers on standby in case of injuries or lost skiers.  One of our huts does not have any electrical power, so we are constantly cycling freshly charged radios to and from that hut, almost every day.  It would be a lot less of a nuisance if we could charge that radio with solar power.  

On the wall outlet plug for charging station for the radios we use, the label says the power output from the ac/dc adapter says it outputs 9VAC 200mA.  I assume this means 9 volts alternating current at 200 milliAmps.  Could I simply find a PV solar cell that outputs 9 volts a/c and connect it to the wire that runs into the radio charger?  Most of the PV cells I found online have a watt rating, but I'm not sure if that matters or not.  Where is a good place to find a specific PV cell for this purpose, for reasonable price?

If anyone person in the Northeast is able to offer significant help for this, I could probably take care of one free lift ticket for your time and help.  I'm also posting an image of the wall outlet plug label and charging station.

Thanks, David