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This is actually a very controversial subject among broadcast historians. Many books will tell you that it was KDKA radio in Pittsburgh, but that is not accurate. While KDKA did in fact receive a license in late October of 1920, there were already other stations on the air, most notably 8MK (today known as WWJ) in Detroit, which had been on the air since late August 1920. There is also evidence that 1XE (later WGI) was on the air in Medford Hillside, Massachusetts in the summer of 1920. And in Canada, XWA (later known as CFCF) was on the air in December 1919.
The problem is the categorization of a "commercial radio station"-- for one thing, there were no commercials or advertisements allowed on radio in those early days. For another, there were no commercial radio licenses issued till September 1921, and the first of these went to a Springfield, Massachusetts station, WBZ. (Prior to that, stations first used an amateur radio license, for a special kind of land station. The first license KDKA got was in fact an amateur license, since there was no professional broadcasting industry yet.) KDKA had a wonderful publicity department and was able to spread the story of being the first station, but evidence suggests it was the second or perhaps even the third.
What else can I help you with?
What were the first commercially available photographs called?
The first commercially available photographs were called the Daguerreotype.
What was the first commercially available mobile handset?
it was a brick
Which of these was the first commercially available revolver?
colt. patterson
Was EDVAC the first commercially available computer in the US?
No, UNIVAC I.
What was the first commercially available gun by colt?
1836 Paterson
What was the name of the first commercially available electronic digital computer?
The name of the first commercially available electronic digital computer is UNIVAC.
What was the first commeicially available computer?
The first commercially available computer in the US was introduced by Remington Rand in 1951: it was UNIVAC I.
When did power steering become commercially available?
Chrysler introduced the first commercially available power steering system on the 1951 Chrysler Imperial under the name Hydraguide.
What types of emergency radios are there?
There are many types of emergency radios available. Some of the types of radio available include Ham radio, AM radios, FM radios, CB radios and walkie talkies.
Was asparagus the first frozen vegetable?
The first commercially available frozen vegetable was spinach or peas.
What was the name of the first commercially available microcomputer?
The name of the first micro computer is a micro computer
Who manufactured first commercially available color television set and when?
Western Electric
