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Saturday, January 4, 2014
Happy Holidays !!!
Friday, March 23, 2012
Radio Controlled Hobbies: A Technological History
| Jagadish Chandra Bose, Crescograph, did extensive research in plant stimulus and radio waves. (Photo credit: Wikipedia) |
Linguistic research into the origins of the word radio reveals that it was from the prefix “radio-“meaning concerned with radiations. The word radio came into being before Hertz’s discovering of electromagnetic radiations. Initially what was radio-telegraphy and radio-telephony over time came to be just radio. One of the first people to popularize the term was another pioneer in America in the field of wireless transmission: Dee Forest.
Tesla demonstrated wireless telegraphy in 1893 almost eight years after the discovery of the electromagnetic waves by Hertz. Jagdish Chandra Bose in 1894 used electromagnetic waves to ignite gun powder and strike a gong in Calcutta (Now Kolkatta) in India. That possibly was the dawn of wireless/radio communications and its applications in science. Tesla in 1896 transmitted wireless signals for nearly 30 miles distance and patented his first four tuned circuit wireless system as being the first practical wireless transmission equipment. Marconi in 1899 spanned the English channel with this wireless transmission.
The dawn of the new century also was the beginning of a new era when Marconi performed the first trans-Atlantic radio signal in 12th December, 1901. The crystal sets which were patented by J.C. Bose came to be commonly used for detecting and receiving radio signals. There have been numerous disputes over who exactly was the first to conceive the idea or wireless transmission, Tesla or Marconi. In between somewhere there is one Popov who was also a pioneer in this field! Tesla is said to have run into financial troubles that greatly limited his run in the race. But nevertheless, Tesla seems to have been the first, but the controversy over this is not our concern now. Whoever it was, the truth stands is that it was one of the finest inventions in the history of science.
The first decade of the century saw many entrepreneurs and experimenters working with wireless radio but it was about at the near end of the first decade that definite hobby interests sparked. Radio signals were originally produced by spark transmitters, which were noisy and inefficient. Then the alternator-transmitter and then the arc-transmitter came into being.
The invention of vacuum-tude diodes and triodes revolutionized the radio transmission and receivers. The invention of triode amplifier generators made audio possible and started a new era of “audio radio”. The vacuum tubes were the staple component for a long time until the invention of the transistor which made the equipment more precise, concise and efficiently mobile!
Then, AT&T used the vacuum tubes to transmit voices over phone lines and this lead to the experimenting of speeches over long distances for audience to hear over loudspeakers. Commercialization was thought about from the initial days but there was no way to restrict the transmission to specific paid users and broadcasting remained commercial-free. Then AT&T started the idea of advertising to finance the programming, and it is here to stay until this very date. There have been constant innovations in the field of radio broadcasting with the latest craze being internet radio. So, radio is NEVER out of date but it is forever coming in new forms.
Related articles
- De Forest vs. Armstrong: The Most Significant Patent War of the 20th Century (phineasazcuy.wordpress.com)
- Complicated Simplicity: A Marconi Wireless Graph of Connections at Sea, 1907 (longstreet.typepad.com)
- The 10 Inventions of Nikola Tesla That Changed The World (2012indyinfo.com)
- The First Two-Way Transatlantic Wireless Message (oup.com)
- Vacuum Tubes (mycircuits9.wordpress.com)
- Dot-dash-diss: The gentleman hacker's 1903 lulz (newscientist.com)
- The K0NR History of Electronic Communications (k0nr.com)
- New Google doodle in honor of Heinrich Rudolf Hertz (washingtonpost.com)
Wednesday, August 10, 2011
Fwd: | 08.09.11 | Charting 2011's women in wireline
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| Subject: | | 08.09.11 | Charting 2011's women in wireline |
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| Date: | Tue, 9 Aug 2011 13:17:25 -0400 (EDT) |
| From: | FierceTelecom <editors@fiercetelecom.com> |
| Reply-To: | editors@fiercetelecom.com |
| To: | nbrauchitsch@yahoo.com |
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Fwd: | 08.09.11 | Motorola open to striking a Microsoft Windows Phone deal
Today's Top Stories 1. Motorola's Jha open to using Windows Phone OS 2. FCC to review AT&T's Qualcomm, T-Mobile deals in 'coordinated manner' 3. Clearwire details LTE-Advanced advantages, but debt issues loom 4. ZTE shipped 35M handsets in the first half of the year 5. Apple gets ITC to look at another HTC patent complaint Also Noted: 4G Virtual Event Spotlight On... Six steps to creating a successful mobile app HP's TouchPad 4G goes on sale at Amazon; Verizon strike centers on wireless and much more... Although the second-quarter handset earnings season is over, FierceWireless has one more bit of analysis to provide. ABI Research's Michael Morgan checks out the world's 10 largest branded cell phone makers in the second quarter of 2011, providing sales data as well as insight into their strategy and competitive position in the market. Though most research firms only list the market's top five handset makers, ABI lists the full top 10 (and the firm is providing shipment numbers for all of the vendors listed). Which companies round out the top 10 and will they be climbing the ranks in the quarters ahead? Find out: Special report News From Across the Wireless Industry: 1. Windows Phone GM Charlie Kindel exits Microsoft 2. Opera targets Chinese market with Oupeng mobile browser 3. Visa accelerates chip migration to drive m-payment adoption
Today's Top News
Also Noted
Quick news from across the Web. @FierceMobiCo: #Orange teams with #Apple for free iTunes movie rentals - FierceMobileContent: Article | Follow@FierceMobiCo > Google reportedly plans to introduce another "Google Phone" to compete against Apple's expected next-generation iPhone. Article > CENX said it will support backhaul for LightSquared's forthcoming LTE network. Release > Workers striking at Verizon are doing so in part because of the rise of wireless. Article > SBA Communications and Health Care REIT announced an agreement to make available wireless site leasing of new rooftop locations in more than fifteen states across the United States. Release > Huawei said InterDigital is unfairly attempting to boost the value of its patents. Article > HTC appears to be heading closer to NFC payments with its CloseConnect service. Article > Primecap Management Co. doubled its investment in Research In Motion in a sign of confidence in the BlackBerry maker. Article > Hewlett-Packard's "TouchPad 4G" is available at Amazon. Article Mobile Content News > Visa announced it will accelerate its mobile payments effort. Release > Google updated its Google+ iOS app to support the Apple iPad. Article > Ovum said feature phone app revenues will reach $1 billion by 2016. Article Mobile Developer News > AT&T's Developer Program launched Power Your Future, a new contest promoting more eco-friendly and sustainable approaches to how mobile subscribers live, work and play. Article > Microsoft Windows Phone Developer Ecosystem general manager Charlie Kindel said he is leaving the company after 21 years. Article > HTC officially launched its new HTCDev web portal. Article And finally... The Android wristwatch. Article
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