Arduino radio module for a few Km range, speed doesn't matter
sorry for bugging on this silly question but i would need your help on choosing a product. I'm looking for a radio module to use with my Mega 2560, with Arduino in general, that can do a few Km transmission range. I would then use a similar receiver to test. Do you have such a product ? No GPS, mobile, radio is what I'm looking for.
Any advice on what you have for this purpose ?