01 ottobre 2008

29 settembre 1920, on air la prima radio commerciale

Il 29 settembre 1920 nasceva la radio commerciale americana. Ecco la rievocazione pubblicata l'altro giorno da Wired su fonte NPR/KDKA, la sigla arbitrariamente assegnata a quella prima stazione di Pittsburgh.

Sept. 29, 1920: Radio Goes Commercial
By Randy Alfred

Listening to radio was a new experience in the early 1920s, and boys were ardent enthusiasts of the emerging technology.

1920: The Joseph Horne department store in Pittsburgh advertises ready-made radio receivers that can pick up a local broadcast station. Commercial radio is just weeks away.
Frank Conrad was assistant chief engineer of the Westinghouse Electric Company in Pittsburgh. He'd been interested in radio since 1912. To settle a $5 bet (about $110 in today's money) about the accuracy of his $12 watch, Conrad built a radio receiver to hear the time signals transmitted by the U.S. Naval Observatory.
Conrad won the bet, but that's not the point. Notice that he had to build his own receiver. Just like the days of home-brew computers later in the 20th century, that's what aficionados of the emerging technology had to do in those days.
If you didn't want to start from scratch, you could -- and this, too, should sound familiar -- buy a kit with all the parts and all the instructions. They were advertised in magazines that appealed primarily to ... guys. Science magazines, the Boy Scout Handbook, cheap fiction, detective rags, and the kind of stuff you'd find in the barber shop.
In any case, Conrad was on to bigger things than building a receiver. Like building a transmitter. Under license 8XK, he started broadcasting from the second floor of his garage in nearby Wilkinsburg in 1916.
In fact, Conrad was a pioneering in using the word broadcasting. It was borrowed from agriculture, where it means spreading seeds far and wide. Radio in those days was conceived of mainly as a two-way point-to-point medium. The idea of using one radio transmitter to reach a broad audience equipped only with receivers was something new.
Conrad tested and tweaked his equipment for hours on end in his spare time. But his voice got tired making constant announcements of his call letters and location, so he started playing gramophone records to give it a rest.
Sure enough, those with their own transmitters started radioing requests for specific music. Those who had only their own scratchy receivers phoned or wrote in. Conrad was radio's first DJ, and he was building an audience.
Horne's department store had something new in 1920: the first shipment of ready-to-use radio receivers. Nothing to build, just plug-and-play. The store placed an advertisement in the Pittsburgh Sun heralding the miracle that you could listen to music over the air:
Air concert picked up by radio here. The music was from a Victrola in the home of Frank Conrad. Mr. Conrad is a wireless enthusiast and puts on these wireless concerts periodically for the entertainment of many people in this district who have wireless sets. Amateur wireless sets are on sale here $10 and up.
The signal was building a demand for the hardware. The hardware was marketing itself with the signal.
Harry Davis, Conrad's boss at Westinghouse, saw some big commercial possibilities in broadcasting. With Conrad's consent, Davis applied for a commercial license to supplant 8XK and was assigned the arbitrary call letters KDKA in mid-October.
The new station went on the air Nov. 2, just in time to broadcast the results of the Harding-Cox presidential election over its mighty 100-watt transmitter.
In 1922, 30 radio stations were in operation in the United States, and 100,000 consumer radios were sold. Just a year later, 556 stations were on the air and half-a-million receivers were sold.
Radio was on its way, and the commercial broadcast model would reign essentially unchallenged for eight decades until the advent of satellite radio and podcasts.
Source: NPR, KDKA

2 commenti:

Andrea Russo ha detto...

Veramente interessante, leggo...

"The signal was building a demand for the hardware. The hardware was marketing itself with the signal."

e subito penso alla radio digitale i cui segnali sono ormai on air da anni...

Fabrizio ha detto...

se andate sul sito ufficiale di ibiquity potete leggere "In one of the most revolutionary moves since Frank Conrad introduced radio broadcasting in 1919, iBiquity Digital Corporation has created HD Radio technology to bring AM and FM radio into the digital 21st century." eheh

chissà se esiste una registrazione dei primi giorni di radio di KDKA (sulla pag di wikipedia di KDKA leggo che non è nemmeno sicuro che KDKA sia stata la prima); chissà quanto ci ha messo KDKA aa avere un'audience sufficiente per andare avanti