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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Terrestrial Radio (WAS: wanted: wireless magic tricks)
If your client is looking for radio as a way to pay an up-front capital cost and avoid the monthly recurring cost to and dependence on a LEC, there are terrestial radio products that could do the job. Satellite, of course, is tremendously more expensive than a leased line at those speeds and does have the TCP windowing headache from latency, though it can certainly be made to work. As for 802.11a, the 5GHz unlicensed window it will use hasn't opened up yet (AFAIK - may be outdated info), and there are no commercial products available. Even if they were, the 5Gig spectrum doesn't travel as well as 2.4 at similar power, and last I heard they weren't expecting to bump up the power limits. Even if they are, the effective rate probably won't be above 30Gbps. I don't know of any technologies that operate in ISM or other unlicensed spectrum that would meet your requirements. Several companies have been building terrestrial links like you would need for years. Check out Harris: http://www.harris.com. The military loves them. Last I checked, their products will do DS3 clear channel at >20 miles with modest ground clearance; they're probably up to OC-3 by now. Being tailored to the Military, as you can imagine, they're very robust, but expensive. You also have some licensing hoops to jump through, but the vendor can help. All in all, a couple hundred $k one time expense isn't bad. - Jeb -----Original Message----- From: [email protected] [mailto:[email protected]]On Behalf Of Cerqua, Toby Sent: Thursday, August 16, 2001 12:02 PM To: '[email protected]' Subject: wanted: wireless magic tricks hey all, we've got a client that wants some crazy stuff, and i need either suggestions or confirmation that this is impossible/too expensive. client needs 45Mbps pushed over 20 miles... and he wants it wireless. the kicker is that they don't want a T3 because it is "too expensive" and it would take too long to get installed. it doesn't need to be constant, but he wants to move of 2.5GB within 45 minutes. this is in the chicago area, if that helps any. so, i don't know, satellite? - toby ----------------------------------------------- [email protected] http://www.platinumsystems.net
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