Long-Range Point-to-Multipoint Wireless Internet

• Overall Status: Waiting on Parts
• Proposed on: October 2004 (CK’s graduation)
• Started on: The next day, pretty much

• Three Senao 802.11b basestations
  • 21dBm transmit strength
  • Very excellent -91dB sensitivity
• Three 8-slot waveguides from Borg NZ
  • 120-degree horizontal scope each
  • 23-degree vertical scope
  • insert link for footprint diagram
• Tower (level 17)
  • 150m altitude from street level
  • insert link for GPS reference
• Rainproofed box for tower equipment
  • Switched hub connecting basestations
  • Power-over-Ethernet to basestations
  • 240V supplied
  • Blinkenlights for IP traffic?
    • R/G/B for 3 basestations?
    • OLED
• Ethernet link from switched hub to lab
  • 2 segments joined by a repeater / hub / switch

• Waveguides to be positioned between 0º and 1º elevation downward from horizon
  • This is to achieve maximum strength (see footprint) at 40km (trigonometrics), our estimated maximum link
• Waveguide compass orientations
  • 000.0º N (apogee of major obstruction)
  • 135.0º SE
  • 247.5º WSW
• Basestation authentication to be decided.
  • Anonymity concerns?
  • Gathering usage stats?
  • Free use is necessary
  • Free use/logins is desirable
• Development of cheap client access hardware
  • Howto make something better than a pringle can transceiver (http://www.turnpoint.net/wireless/cantennahowto.html)

• [DONE] First stage ethernet installed.
• [DONE] 240V supply installed.
• [DONE] Basestations purchased.
• Antennae require purchasing.

• Rang and normally cost around $30 for shipping in quantities of 40 (therefore, for quantities of 3, much higher).
• He will get back to us and provide new pricing, and CK to email him 14th of September. Update 24-Nov – no response from NZ.
• DE is now pursuing a new, Sydney-based line of supply for equivalent product.

• Blinkenlights require purchasing.
• In-lab configuration of basestations is highly recommended
• Short-range testing of point-to-point connectivity is highly recommended

• Name of antennae supplier is Andrew Hooper.
• Insist on 8-slot waveguides, not sector panels etc.
• Export from NZ has been confirmed as viable by Andrew Hooper.
• Email at Andrew Hooper <andrew at borg.co.nz>
• Phone at 0011 64 21 212 9200.
• NB: Ask Westpac if they can cheaply send payments to Westpac NZ bank accounts.
• Unordered List Item