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Hawaii Preliminary Technical Assessment /CTAP-HIHA-PREASSESS-001-RO <br />Table of Contents <br />1. Introduction .......................................................................................................................1 <br />1.1 Background ......................................................................................................................... ..1 <br />1.2 New System Requirements ................................................................................................. ..1 <br />2. Voice Communications .................................................................................................. ..2 <br />2.1 Public Safety Frequency Bands Comparison ..................................................................... ..2 <br />2.1.1 VHF, 700 and 800 MHz Frequency Licensing .............................:.................................. .. 3 <br />2.1.2 RF Coverage Comparison .............................................................................................. ..4 <br />2.2 Simulcast Modulation .......................................................................................................... ..8 <br />2.3 I nteroperability ..................................................................................................................... .. 8 <br />2.4 Project 25 Interoperability ................................................................................................... .. 9 <br />2.5 P25 Subscriber Units .......................................................................................................... 10 <br />2.6 Voice Communications Recommendations ........................................................................ 11 <br />3. Site Selection ................................................................................................................... 13 <br />4. Microwave System .......................................................................................................... 13 <br />5. High Performance Data (HPD) ....................................................................................... 14 <br />6. VHF -Fire Alert Paging .................................................................................................. 15 <br />7. Conclusion ....................................................................................................................... 15 <br />Table of Figures <br />Figure 1: Talk-out Coverage, 861 MHz ................................................................................. ..5 <br />Figure 2: Talk-out Coverage, 769 MHz ................................................................................. ..6 <br />Figure 3: Talk-out Coverage, 155 MHz ................................................................................. ..7 <br />List of Tables <br />Table 1: Bounded Area Coverage ...........................................................................................8 <br />October 2008 <br />