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Registered Member #617
Joined: Fri Mar 30 2007, 07:29PM
Location: Buffalo NY
Posts: 49
One of my mothers companies is located on the grounds of a major railroad in the northeast and their telecom system uses microwave transmission towers as opposed to landlines. Hence they have to dial into the network using aol as opposed to a t1 that they have at other locations. I know not all railroads use microwave transmission for communications but if you are noticing rail road tracks with a 4mhz signal. chances are you're tresspassing on the property of one who does. I hope that helps and sorry for being vague....Im just not supposed to know that i think. The reason why they put them up supposedly was i think like 30 years ago to save money on copper.
Registered Member #498
Joined: Sun Nov 19 2006, 06:00PM
Location: Bay Area
Posts: 19
halomaster2004 wrote ...
One of my mothers companies is located on the grounds of a major railroad in the northeast and their telecom system uses microwave transmission towers as opposed to landlines. Hence they have to dial into the network using aol as opposed to a t1 that they have at other locations. I know not all railroads use microwave transmission for communications but if you are noticing rail road tracks with a 4mhz signal. chances are you're tresspassing on the property of one who does. I hope that helps and sorry for being vague....Im just not supposed to know that i think. The reason why they put them up supposedly was i think like 30 years ago to save money on copper.
Registered Member #1360
Joined: Thu Feb 28 2008, 12:55AM
Location:
Posts: 4
Looks like some really low bit rate FSK signal. *Lots* of companies use wireless links for data transmission. At this low bit rate I doubt is is anything more than a status indicator or control interface.
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Railroad tracks on 4mhz.
