Roberts can be any criticism of the design ideas, but for his commitment to the ideals of this manufacturer should be noted only in a positive tone. Take, for example, a patent for the last radio with digital audio broadcasting: despite his not harmonious appearance, it will be the first receiver, solar-powered.
The device will be equipped with a special panel with indicator indicating the level of absorption of sunlight. After recharging the battery, the receiver will be able to work up to 27 hours. The cost of solar radio will be $ 158.