Short wave radio EVOLVED. The lower wavelengths below 300Meters- were assigned to amateurs, as the commercial stations thought they were worthless... around the teens or after World War I.=( the 200Meter wavelength was used by Tramp steamers, though) Amateur experimentation indeed opened up horizons in this field from when radio amateurs first came out legally ( around l9ll in the US) onwards, so the discoveries were made more or less accidentally poking around with the assigned lower frequencies and improving on coils, tubes, antennae, etc.
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This phrase has been used at many radio stations for many years. It is impossible to determine which radio station used it first.
The first hand was invented in 1701.
dick.fread was the first person who invented the ute
uhhh.... I think you mean: where was the first toilet invented. In Bristol
Charles Richard Drew invented the first blood bank.