Wireless Broadband?

kishi asks: "My office needs to ditch 7 dedicated phone lines and 7 dial-up ISP accounts. Roadrunner (which I use at home) isn't available and two different DSL networks have told us 'yesnomaybe'. It has been 'yesnomaybe' for 11 weeks and we're still paying $175 for dial-up access. Hyperoam offers wireless broadband. Do any of you Slashdotters out there have any experiences (good, bad or indifferent) with it? I need more information on wireless broadband before I take the plunge and get rid of something that works for something that might not."

Comments

Find a local ISP to work with... (includes how-to)

[Myrcurial]

Please note: I run a regional semi-rural ISP - we do this kind of work every day.

The trick with wireless broadband is usually that you are in an area that is seen as "unfashionable" to the large regionals and nationals.

Find yourself a local ISP - somebody that has some bandwidth and a bit of a DIY attitude. The gear to provide a point to point 2mb connection including antenna, cable, lightning arrestor, radio and short mast is less than $1000. The demarcation on both ends is ethernet. Note that you do need visual and radio line of sight as this gear doesn't go around corners well. Here's a good shopping list / procedure guide:

• find an ISP with an office or POP within about 5 miles of you - you need to be able to see his roof from your roof or you'll have to buy a tower
• arrange with the ISP to purchase bandwidth delivered at his POP as ethernet
• purchase equipment:
  • 2 Teletronics 2mb 802.11 access points
  • 1 Linksys etherfast cable/dsl router (1 port)
  • 2 24db grid antennas
  • 2 2.4GHz capsule type lightning arrestors
  • 2 teletronics to N-Female jumpers
  • 2 lengths LMR600 M-M suitable to reach from radio location to point where the cable leaves the building
  • 2 lengths #6 ground wire to reach from lighting arrestor (mounted on outside of building where cable enters building) to the ground in a straight line
  • 2 copper lug clamps to connect ground wire to body of lightning arrestor
  • 2 8 foot copper clad steel grounding rods with clamps
  • 2 10 foot sections 1" schedule 80 metallic water pipe
  • 2 sections of LMR600 M-M to reach from the lightning arrestor up to the antenna
  • high quality electrical tape (Scotch 33)
  • butyl rubber fusion tape
  • UV resistant (black) cable ties
  • misc mounting hardware
• Install gear on buildings
• set one AP in AP mode, set the other in infrastructure mode
• set up IPs
• surf fast!

This will give you serious net connectivity at a very reasonable price (compared to a telco T1, you'd see payback within about 2 weeks) in a way that is easy for both the ISP and you to deal with.

Here's the connection sequence starting from the ISP running to you:

• connect ethernet from ISP's hub/switch to teletronics radio
• connect teletronics to N-Female jumper to radio
• connect first length of LMR600 to the jumper
• drill 7/8" hole and pass cable outside
• attach cable to correct port on lightning arrestor (usually marked "to radio")
• attach grounding lug to lightning arrestor and mount on building exterior
• attach ground wire and drop to ground
• hammer ground rod into the ground (this might take a while)
• attach grounding cable to ground rod
• attach antenna feed cable to lightning arrestor
• wrap the lighting arrestor and cable ends completely in the scotch 33 tape
• wrap the taped connection in the butyl rubber fusion tape - follow package instructions
• wrap again with scotch 33 TWICE
• mount mast to roof
• run cable up on roof and up mast cable ties where necessary
• mount grid antenna per package instructions (some assembly is required - these are usually 2 feet by 3 feet
• visually align antenna with other site
• fine tune alignment with AP software
• once alignment is confirmed, tighten everything down and wrap the antenna connector as described above

At your end, follow the same instructions, just add the linksys in as a NAT connection between your network and the public IP you got from the ISP.

There are a few other little tips and tricks - if anyone needs help, email me.

There are other product offerings that will work just as well, but only the teletronics gear is this cheap and has been field proven in this kind of environment with no 'engineering' assistance.

For a good topical discussion on this, join-isp-wireless@isp-wireless.com be careful though, this is a high volume list.

Most of what you need can be had from www.wpcs.com or www.tessco.com.