Truman was the first to make national TV and radio broadcasts. Franklin Roosevelt appeared on an experimental and limited TV broadcast.

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Here in the USA, NTSC 'compatible color' TV broadcasts began on a limited basis in 1953. NBC was the first network here in the US to go 'full color' in 1966.

Early television broadcasts were transmitted on VHF (very high frequency) radio channels. They moved to UHF (ultra high frequency) and have remained on that band since. These bands are used for terrestrial broadcasts.

Satellite broadcasts use even higher frequencies.

Live television broadcasts are broadcasts that are seen by the viewer as they are happening, as opposed to delayed broadcasts, that are recorded, edited and then broadcast to the viewer at a later date or time. An example of live television broadcasts would be the nightly news or a presidential speech. Delayed, non-live television would be weekly dramatic shows seen nightly in prime time or a movie of the week.