Well, I hate to admit it, but I owned a new Eton FR-400 water-resistant 'Recycle Power' radio when I wrote my earlier reply. I bought it and a bag full of other goodies Saturday night at an auction - for $850. Oh yeah, a week at a condo on the Rednech Riviera, our choice of dates, was included - something like a $2k value for the condo(...and the radio!). It was 'for my wife'... I'd rather be in The Smokies. I have to start collecting pop bottles for gas money.
The radio seems quite sensitive on AM - and decent on FM, as well as local TV VHF channel (2-6 & 7-13) audio - at least for the remaining month until the digital switch. I hate to admit it, as I have had an FCC Radiotelephone First Class/General Radio License since 1968 - and been the chief engineer for several FM stations, but I don't know if they will continue to use a WBFM transmission mode for their audio after the change or not, making this radio's TV audio reception possibly of limited value. It also has the NOAA WX reception capability.
Power can be supplied externally, from a wall wart power supply, or from an internal NiMH pack or 3xAA batteries, or a hand crank powered dynamo, ie, not a spring-motor. I don't feel that solar cells would be a great attribute - treetop canopy cover, night, etc, render that less than important. It's 2" x 4.5" x 8.5" size isn't bad, it's water resistant rating, either... just note it isn't water proof. It also has a pair of white LEDs - or flashing red LED - that can be used, as well. The WX radio covers all 7 channels - and has an 'Alert' function where it can monitor quietly until a weather emergency is broadcast. Not a bad choice for your home 'emergency' kit - maybe a bit much for the back pack. It does have AA capability.
Re radio reception. FM, TV audio, and NOAA WX are 'line of sight', while AM will make it over the horizon, even if slightly, power and interference permitting, in the daytime. As dusk approaches, more distant stations to your east will start to come in as sky wave signals, producing more interference with lower powered or more distant local stations, begin to come in. When many lower powered stations go to night time reduced power - and night falls - the distant stations will often predominate.
Stainz
PS I have been a SW radio listener since Kennedy was president. The once plentiful English broadcasting beamed to the US in convenient listening hours is now a wasteland.