3M

Slide 2:3M�s interest in GPS repeaters (or re-radiators)

For use in conjunction with Opticom� GPS system

Slide 3:3M�s proposal will include restrictions on use and operation

GPS repeaters will not fall into the wrong hands Use will not compromise conventional GPS equipment Use will not cause interference to other GPS users

Slide 4:Implementation of 3M�s proposal will:

Significantly contribute to safety of life and property Satisfy the concerns of regulators

Slide 5:3M is seeking experimental authorization to:

Demonstrate equipment to prospective purchasers Test equipment � obtain regulatory approval Conduct field studies to evaluate interference potential

Slide 6:Opticom� GPS system features

Controls traffic signal priority Does not disrupt normal traffic flow

Slide 7:Need for GPS repeaters

Emergency vehicles must acquire GPS signal quickly GPS signal provides location and timing synchronization

Slide 8:How the 3M Opticom� GPS system works

Transmitter on emergency vehicle sends 2.4 GHz signal Receiver near intersection converts signal to electronic communication Phase selector in controller cabinet request priority advantage to control traffic light Traffic light turns green as emergency vehicle approaches intersection GPS repeater assures that all of this takes only seconds from start of run

Slide 9:How the 3M Opticom� GPS system works

Emergency vehicles shielded from GPS signal since housed in closed buildings Use of GPS repeater allows vehicle to be �locked on� to GPS signal at all times

Slide 10:Without GPS repeater, acquisition of GPS signal is delayed by:

Time to start up vehicle and exit the building Shielding from trees, tall buildings and other obstacles Critical delay of up to five minutes before emergency vehicle could lock on to GPS signal Precious time may be lost in emergency circumstances!

Slide 11:911 Emergency ResponseManagement � Travel and Response Time

minutes

Slide 12:Flashover

Fire test jointly conducted by Factory Mutual Research and Harvard University 911 Emergency ResponseManagement � Travel and Response Time

Slide 13:Typical GPS repeater installation:

GPS repeater in building in view of vehicle EIRP limited to -140 dBm at 100 ft. With 3 dB antenna, ERP limited to 39.8 pW Notification to FCC of particulars of operation location, number of units power, emission designator any other information deemed pertinent

Slide 14:3M�s use of GPS repeaters would be within present regulatory limitations

Radiation below level permitted by FCC for spurious emissions

Slide 15:Adherence to NTIA policy objectives:

Individual license for each GPS repeater FCC will have full particulars of operation No operation for more than six months without regular license Use of GPS repeater terminates if any reported interference cannot be eliminated Two-year license term and listing of approved sites in accessible database

Slide 16:Potential interference is strictly limited

Use under control of public safety officials � well known in their communities. Other users of GPS notified of use of GPS repeaters �Stop buzzer� phone no. available 24/7 GPS repeater shuts down pending investigation and remediation Other emergency uses of GPS not compromised

Slide 17:3M will provide periodic reports as requested by FCC

Proposed use of GPS repeaters will contribute to development of standards Will provide federal government with valuable information

Slide 18:Summary

Proposal strictly tailored to limit use and avoid interference Will operate inside buildings Will operate at lowest power possible Will be under supervision of local government public safety officials

Slide 19:Summary

Use of GPS repeaters will save lives! serves an important function of FCC�s regulation of radio 3M will institute rulemaking based on information developed during experimental operations