|MadSci Network: Physics|
Shows like NPR, Rush Limbaugh, etc. are heard in all parts of the country at the same time. I know that only shortwave radio has the power to travel through the air over such long distances. Does that mean that the stations that carry such shows in different cities are all connected by dedicated wires or some such mechanism? If so, was this also the case in the early days of radio, e.g. Roosevelt's andquot;Fireside Chatsandquot; etc.?
Re: How can an FM or AM broadcast be heard simultaneously nationwide?
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