Engineering Services
Network Engineering
- Local area networks
- Wide area networks
- Open transport Network (OTN)
- SONET
- Frame Relay
- Gigabit Ethernet
- Metropolitan area networks
- Optical fiber infrastructure for system-wide connectivity throughout the metropolitan area
- Combination of fixed wireless and dedicated wire-line networks
Site Surveys
- Site survey of segments of an underground antenna system in tunnels and stations
Radio Site Location Design
- Radio site surveys of
- Microwave dish placement
- Antenna location
- Site location survey
- Environmental assessment
- FAA/Aeronautical studies
- FCC tower registrations
- Equipment shelter
- Generators
- Electrical service
- HVAC and Fire suppression (FM 200) systems
Site Acquisition Support
- Site-lease procurement assistance to customers
- Coordination with site owners
- Tower and FCC database research
- Plot radio sites for customer review to narrow-down search
- Overlay of 2D and 3D terrain maps to select the best site
Frequency Planning
- Spectrum planning for UHF TV band, 800 MHz, 700 MHz, cellular and PCS customers
- APCO and FCC database research
- Inter-system coordination for adjacent and co-channel protection to mitigate potential interferences
Interference Studies
- Inter-modulation analysis and link budgets for radiax systems for a multiple carriers sharing the radiating cable for the underground and in-building radio coverage
- Adjacent and co-channel TV station Grade B contour analysis for UHF and mobile radio systems
- Inter-system and Intra-system interference analysis for analog and digital cellular system
- Radio frequency system analysis for antenna system design, TX combiners and RX multi-couplers
Field Testing and Troubleshooting
- Extensive propagation prediction studies and field measurements to compare 490 MHz and 800 MHz simulcast trunked UHF land/mobile radio systems for a metro transit authority.
- Cellular/PCS systems propagation model tuning with received signal field strength data obtained from field measurements
- Microwave relocation interference analysis using field analyzer during a PCS service provider initial startup in 2GHz band
- OTDR and precision power meter testing to troubleshoot splicing flaws and recommendation for fiber repair
Traffic Monitoring
- Cellular/PCS
- UHF/VHF/800 MHz Land Mobile Radio systems
- Erlang B and Erlang C calculations
- Recommendations for required number of trunked channels
- Measurement of propagation delay, busy time and call duration statistics
Hardware Installation
- Cisco 3750 Gigabit Layer 3 Ethernet switches
- Layer 2 switches (3Com and others)
- Arial and underground fiber cable
- SONET nodes
- Open Transport Network: Siemens wide area network system
- Test equipment for BER measurements for microwave links
FAA/FCC Licensing
- FAA determination for observation marking and lighting
- Aeronautical studies
- FCC tower registration
- FCC licensing and renewal
- System area boundary contours and cellular geographic service area maps
- FCC expert witness for mediation to resolve dispute among neighboring cellular carriers