WiFiber™: Gigabit Wireless Solution for High-Speed Data Transmission

1. Overview Presentation 70/80 GHz Gigabit WirelessSpring 2006 Internet 2 Meeting John Krzywicki and Jonathan Wells

2. WiFiber™ Wireless Fiber • What is WiFiber? • Economics Benefits • Licensing and ease of use • Domestic and international scope • WiFiber technology • Wireless and wireline technology landscape • Why 70/80 GHz? • High data rate alternatives • Technology comparisons • Installation and application examples Agenda | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

3. Is • Point-to-Point Wireless Microwave Radio • Upper millimeter wave transceivers and antennas as a package • High frequency (71-76, 81-86 GHz) • Multi-gigabit-per-second transmission (Voice, Video, Data) • Fiber-equivalent • Line of sight • Small footprint • Tower, rooftop, window, pole mountable • Development trajectory up to OC-192 • Carrier, municipal, and enterprise installations What is WiFiber™? | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

4. Capacity and Spectrum Advantage | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

5. Disruptive Pricing | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

6. “All the cheap fiber has already been laid.” Fiber | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

7. No RF is impervious to weather: our “sweet spot” is the last 1-2 miles • We ONLY see torrential rain (3+ inches per hour) • The tradeoffs • In dry air: 10 mile range • Over the course of a year • Five 9’s to a mile in 80% of the continental US • Five 9’s to 0.7 miles in the rest (FL-LA) • Europe: Longer ranges • At Four 9’s, distance doubles, and at Three 9’s, nearly double again: useful in the 3rd world • In a properly designed ring, the distance of each link can be doubled: rotational diversity • To repeat, we do NOT see dust, fog, snow, ice, scintillation, oxygen, molecule absorption, light rain, medium rain Range and Reliability | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

8. Form Factor • Radio – 1ft cubed • Antenna – 12” or 24” • Mount – mono-pole, tower, window, or rooftop • Pencil beam – low spread, low dispersion • Rated radio draw - 70 Watts (less than a light bulb) • Measured draw – 50-55 Watts • Power output - 100mw (less than a cellular phone) • SNMP Monitoring • Installation: 4 hours or less • Alignment: typically 30 minutes of the four hours • Web based filing to get the spectrum license: 20 minutes GigaBeam WiFiber™ | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

9. FCC Licensing • 13,000 MHz • (71-76, 81-86, & 92-95GHz) • 50+ times all cellular combined • “Gobs of spectrum” • Licensed pencil beams • Nearly free to all comers • Lightening fast approval process | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

10. Outside the US, fiber is less available and • access costs are often double or more US costs • CEPT—European wide bandplan granted • UK, Ireland, Norway, Spain, others showing progress • Circuits approved for installation in Australia, South Africa, Bahrain • Growing interest in Japan, China, and Middle East International | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

11. Solution Comparison | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

12. Atmospheric and Molecular Absorption 71 to 86 GHz Atmospheric Absorption < 0.5 dB/km 500 700 30 20 50 70 200 300 Per ITU-R P.676-6 (2005) Data for mid-lat, summer | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

13. 71- 86 GHz Rain Loss Note that sand, dust, fog, snow, etc have no significant effect attenuation at mm-waves Per ITU-R P.838-3 (2005) Data for vertical polarization | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

14. WiFiber Distance Analysis | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

15. 3.5/1.1 MILES 4.0/1.3 MILES 3.0 / 1.1 MILES 2.5/1.0 MILES 2.1/0.8 MILES 3.9/1.2 MILES 1.5/0.6 MILES 99.9% / 99.999% (By Rainfall Region) Link Distance/Weather Availability | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

16. Upper Millimeter Wave Spectrum Bands Support Multi-Gigabit-per-Second Communications for 1 mile @ 99.999% 71-76, 81-86, 92-95 GHz 71-76, 81-86, & 92-95GHz 60GHz FSO | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

17. High Data Rate Comparisons 99.999% 99.99% 99.9% 99% Weather Availability (Source: Based on weather statistics for 10 largest US cities) | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

18. Conventional vs. GigaBeam Systems | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

19. Technology Comparisons | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

20. Major Carriers Are Adopting WiFiber™ | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

21. G-Series Supports City of Manteca, CA Multiple GigaBeam G-Series radios installed for the City of Manteca, CA. | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

22. G-Series Supports Kingdom of Bahrain Kingdom of Bahrain Link connecting the Almoayyed Tower to Amwaj Data Center. This link is 8 miles. | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

23. G-Series Supports San Fran Public Utility Commission | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

24. G-Series Supports Dartmouth College, Hanover, NH Point to Point 1.4 mi. | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

25. GigaBeam on Rudin Management’s 32 6th Avenue Facility Offers • Line of sight access to over 1,800 buildings • Line of sight access to Mid-town, New Jersey, Brooklyn and Queens • Direct access to numerous national and international carriers • Direct access to Internet II • Indirect access to Manhattan and New Jersey telecom facilities Applications: Access | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

26. 55 miles an hour to the scene • 30 minutes to erect tower • Circuits restored in 4 hours • Can recover 90 square miles with 200+ T-1s for <$1M • WiMAX style radios for T-1 circuits Applications: Disaster Recovery | The Information contained in this presentation is confidential. It is not to be distributed to third parties without the express written consent of GigaBeam Corporation.

27. John KrzywickiJonathan Wells PhD VP Marketing, Strategy and Director Product Management Business Development C: 925-200-5124 C: 617-759-2105 jonathan.wells@gigabeam.com john.krzywicki@gigabeam.com Contact Information GigaBeam Corporation 470 Springpark Place, Suite 900 Herndon, VA 20170 www.gigabeam.com Nasdaq: GGBM