Milestone-Proposal:Wireless Transmission between Fixed Antenna and Moving Trains, 1913: Difference between revisions
From ETHW
(Article updated via HTTP request) |
(Article updated via HTTP request) |
||
| Line 1: | Line 1: | ||
{{ProposalEdit|a1=Wireless Transmission between Fixed Antenna and Moving Trains, 1913|a2a=Henry Street, Binghamton, New York|a2b=Binghamton Section|a3=1913|a4=Prior to 1913, wireless communication had only been used between two fixed stations on land or between one fixed station and one slow moving station, such as a ship at sea. It was not known whether this form of communications would perform adequately with one of the stations moving at a high rate of speed, for example a train moving at its maximum speed in 1913 of 40-55 miles per hour. The transmission between the train moving from Binghamton to Scranton at this speed, and the fixed towers at Binghamton and Scranton convincingly demonstrated that such communications were feasible, reliable and practical. For example, it was demonstrated that the length of the antenna / receiver on the train could be as small as 18 inches above the train for good communications performance. GIven the dominance of trains for high speed transportation of the early 1900's, there was a great advantage of an enabling technology to support communications from a moving train to the stations. The 1913 feasibility demonstration from this tower provided the ability for improved safety and convenience of train transportation and also spurred future development of wireless communications for other applications.[1][2][3][4][5][6]|a5=Michael C. Duffy's account of this test in Electric Railways 1880-1990 states that the test performed on November 21, 1913 was the first demonstration that wireless communication between between fixed stattions and moving trains was practical and reliable. Tests prior to then, such as those in 1909, were judged to be too primitive for dependable results. The 1913 experiments demonstrated that wavelengths of 600m-3000m and power of 1kW-5kW provided adequate communications for the train and fixed stations transmitters and receivers. It was also demonstrated that that a single tower (station) could communicate with a moving trin for over a distance of 130 miles. A series of stations could be used to cover a much longer range. This technology was rapidly adopted after its utility was shown. A severe storm in 1914 in the United States crippled most train transportation except for those lines already using wireless communication. |a6=The technical obstacle consisted of understanding the correct parameters for wireless communications to succeed between a fixed antena and the antenna on a rapidly moving train.|a7=The Milestones Plaque will be placed on the actual tower used in the experiment. It is located beyond the sidewalk on Henry St in Binghamton, New York. As the tower and plaque will be outside there is no need for visitors to go through security.|a8=Yes|a9=The tower is accessible off the sidewalk|a10=Mr. Ari Meisel|a11=Yes|a12=Binghamton Section and Binghamton University Student Chapter|a13name=Doug|a13section=Binghamton, NY|a13position=chair|a13email=|a14name=|a14ou=|a14position=|a14email=|a15Aname=Diana Bendz|a15Aemail=dbendz21@aol.com|a15Aname2=Ed Ware|a15Aemail2=|a15Bname=Diana Bendz|a15Bemail=dbendz21@aol.com|a15Bname2=Ed Ware|a15Bemail2=|a15Cname=|a15Ctitle=|a15Corg=|a15Caddress=|a15Cphone=|a15Cemail=}} | {{ProposalEdit|a1=Wireless Transmission between Fixed Antenna and Moving Trains, 1913|a2a=Henry Street, Binghamton, New York|a2b=Binghamton Section|a3=1913|a4=Prior to 1913, wireless communication had only been used between two fixed stations on land or between one fixed station and one slow moving station, such as a ship at sea. It was not known whether this form of communications would perform adequately with one of the stations moving at a high rate of speed, for example a train moving at its maximum speed in 1913 of 40-55 miles per hour. The transmission between the train moving from Binghamton to Scranton at this speed, and the fixed towers at Binghamton and Scranton convincingly demonstrated that such communications were feasible, reliable and practical. For example, it was demonstrated that the length of the antenna / receiver on the train could be as small as 18 inches above the train for good communications performance. GIven the dominance of trains for high speed transportation of the early 1900's, there was a great advantage of an enabling technology to support communications from a moving train to the stations. The 1913 feasibility demonstration from this tower provided the ability for improved safety and convenience of train transportation and also spurred future development of wireless communications for other applications.[1][2][3][4][5][6]|a5=Michael C. Duffy's account of this test in Electric Railways 1880-1990 states that the test performed on November 21, 1913 was the first demonstration that wireless communication between between fixed stattions and moving trains was practical and reliable. Tests prior to then, such as those in 1909, were judged to be too primitive for dependable results. The 1913 experiments demonstrated that wavelengths of 600m-3000m and power of 1kW-5kW provided adequate communications for the train and fixed stations transmitters and receivers. It was also demonstrated that that a single tower (station) could communicate with a moving trin for over a distance of 130 miles. A series of stations could be used to cover a much longer range. This technology was rapidly adopted after its utility was shown. A severe storm in 1914 in the United States crippled most train transportation except for those lines already using wireless communication.|a6=The technical obstacle consisted of understanding the correct parameters for wireless communications to succeed between a fixed antena and the antenna on a rapidly moving train.|a7=The Milestones Plaque will be placed on the actual tower used in the experiment. It is located beyond the sidewalk on Henry St in Binghamton, New York. As the tower and plaque will be outside there is no need for visitors to go through security.|a8=Yes|a9=The tower is accessible off the sidewalk|a10=Mr. Ari Meisel|a11=Yes|a12=Binghamton Section and Binghamton University Student Chapter|a13name=Doug Hopkins|a13section=Binghamton, NY|a13position=chair|a13email=d.hopkins@ieee.org|a14name=|a14ou=|a14position=|a14email=|a15Aname=Diana Bendz|a15Aemail=dbendz21@aol.com|a15Aname2=Ed Ware|a15Aemail2=e.ware@ieee.org|a15Bname=Diana Bendz|a15Bemail=dbendz21@aol.com|a15Bname2=Ed Ware|a15Bemail2=e.ware@ieee.org|a15Cname=|a15Ctitle=|a15Corg=|a15Caddress=|a15Cphone=|a15Cemail=}} | ||
Revision as of 20:57, 20 April 2009
This Proposal has not been submitted and may only be edited by the original author.
