1) Where can I find a driver, horn or whatever, to drive a large satellite dish for the link to the valley.� From the comments I take it that 2.4/5.7 is not clear for long links.� For a 10 foot dish the gains are around 36/43 dB but will the path loss eat up the gain of 5.7?
I don�t think you will need more than 24db gain for the links into the valley.. Based on the path calc�s we did earlier, it should be no problem on doing the link on 2.4 using 24db grids on both ends at 100mw. Regarding noise floor, I don�t think it will be a problem with a tight pattern. I have links all over the bay area now at up to 13 miles without any issues. A good selection on antennas can be viewed at www.electrocomm.com .. download the PDF catalog. My favorite linking antenna is the Andrews/Conifer MAG24.. it�s a diecast grid with great performance and durability. For a bombproof 5g link, check out the redline an-50 radio.. very nice, not too expensive.. 2)� Any comments on the Motorola Canopy system?� www.motorola.com/canopy�� They are 5G self contained outdoor units 3.5 x 3.5 x 12 inches at 200mw with optional dish reflector like a Directv dish.� They claim 35 miles (all weather) at 20 Mbit with their backhaul unit with reflector.� No mention of 802.11.� Looks like propriety RF system Ethernet to Ethernet. The canopy system is easy to setup, but it is also slow from a customer perspective. The system has a latency of 20ms per link which I think is too high and doesn�t go over a couple of mbits for standard customer radios. Your area has low signal noise on 2.4, and 2.4 will carry farther than 5.8. 2.4 equipment is cheap (i.e. smartbridges).. why bother with canopy when you can get 11mb/2ms latency links on 2.4? If you want to go 5G, I really suggest you check out the new Alvarion 5.8 OFDM equipment.. its well built, and fast. You might even be able to use 900Mhz equipment in your area.. it could help with valley and tree penetration. 3)� I have line of sight to the hills above Berkeley and Mt. Diablo.� Any comment of connecting to BARWN. Tim? I can provide a link if you are willing to split costs.. off list for costs, etc.. -- general wireless list, a bawug thing <http://www.bawug.org/> [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless
