GPS Outfitters GPS Reradiation Presentation IRAC 10282005 GPS

GPS Outfitters GPS Reradiation Presentation IRAC 10/28/2005

GPS Outfitters • Exclusive Authorized Distributor for San Jose Navigation Reradiation Products • SJNs’ appointed agent for all reradiation and regulation matters in the US • Supplier of aftermarket GPS Accessories

RA 46 Vortech Overview • 3 part, low power L-1 GPS reradiator • External amplified antenna • Power/RF Cable • Sealed, non-adjustable RF Transmitter

RA 46 Vortech Application • Designed to provide GPS signals in environments where a clear view of the sky is not possible • Low Power Level does not compete with free atmosphere GPS signal • Designed for maximum effective range of 5 meters

RA 46 Vortech GPS Re-Radiator RF Parameters • Re-radiator ant. 3 m from horn ant. (EMCO 3115, G = 26 d. B), cable connected (1. 9 d. B loss) to HP 8546 A EMI receiver (50 Ohm input impedance). – Signal: 1. 1 d. BμV, or -105. 9 d. Bm input to EMI receiver – Accounting horn gain, cable loss & 3 m path attenuation • RA 46 EIRP = -109. 5 d. Bm • RA 46 power at 30 m = -150 d. Bm, 10 d. B below new regulation limits

RA 46 is an Ultra Low Power Device • RA 46 EIRP of -109. 5 d. Bm is equivalent to 0. 01 nano-milli-Watts. • This power level is a factor of 100 billion below the 1 milli-Watt power level where transmitters are candidates for non-licensed applications. • RA 46 typically operates within less than one meter of the GPS receiver being assisted • RA 46 is a non-threat to any nearby GPS receivers or other communications devices

RA 46 Very Low Power • Section 15. 205 states – Spurious Emissions Only in 1. 44 to 1. 62 GHz spectrum (GPS L 1 region) at 500 μV/m at 3 m equivalent to -71 d. Bm. • RA 46 EIRP of -109. 5 d. Bm is 39 d. B below the spurious emissions limit

Worst-Case Interference Issues • Sealed, non-adjustable transmitter with limited range and power level below acceptable spurious emission limits • Potential for multipath confusion at GPS receiver, most have algorithms to correct • Result would likely only be accuracy error of less than 30 feet

Safety Benefits • Allows GPS equipment to stay locked on inside a vehicle, protecting military users inside APCs, Tanks, and Humvees • Prevents vehicles from getting lost due to poor GPS performance in urban areas or lack of sky view • Improves response time to emergency situations and keeps tracking information current and correct

Commerce Benefits • Allows users to use existing GPS equipment without external antenna capability instead of more expensive models • Cost efficient alternative to ‘smart antenna’ solutions in PC applications • Allows use of existing GPS board already purchased

Convenience Benefits • Temporary or fixed installation • Wireless transmission to GPS device • No Power or RF cabling to existing GPS device allows quick removal and continuous satellite lock when leaving vehicle • No need to add or configure USB or Serial GPS hardware in PC applications

Regulatory Issues • RA 46 Vortech power level is low enough to fall within current guidelines, but does operate on restricted frequency • Request an Equipment Waiver based on tested and approved power level to preserve existing restriction guidelines and limit/control usage to government and commercial entities • Registration requirement/experimental license for all purchasers to contact users in the future

Equipment Waiver • GPS Outfitters will submit samples to FCC or Certified Test Lab to confirm power and bandwidth specifications • GPS Outfitters will limit sales to military, government, and commercial customers and restrict sales to general public and maintain customer database • Waiver is revocable upon determination of harmful interference from future RF devices