Rf Engineer Project Manager

CHRIS ARRINGTON

949-***-**** *****.*********@*****.*** Tucson, AZ

SR. RF ENGINEER

Senior RF Engineer with 30+ years of experience specializing in the design and optimization of indoor and outdoor Distributed Antenna Systems (DAS) networks. Level 3 certified iBwave expert experienced in design of active & passive in-building systems. Atoll super user experienced with oDAS & macro cell design & planning. Adept at working with various industry-leading equipment providers, including Nokia, Ericsson, Teko, Solid, Corning, CommScope, & ADRF. Sound understanding of RF fundamentals, system noise, and the nuances of 4G/5G migration. Background in LTE, UMTS, CDMA, GSM, iDEN, and AMPS technologies. City of Tucson, Planning and Development Services Department, Tucson, AZ Jul 2024 – Present Engineering Associate

Review, and approve site development & building plans

• Ensure submitted plans adhere to regulatory codes including, Tucson City Code, Unified Development Code and ADA

• Advise on grading, drainage, stormwater pollution prevention, as well as pedestrian access, parking, & ADA requirements

• Review data and calculations to verify accuracy & complete-ness of submitted construction plans & reports

• Use GIS mapping to assess if proposed site falls within a floodplain & provide guidance on permit approval Verizon Wireless, Chandler, AZ May 2024 – Jul 2024 Network Project Manager Consultant

Project management for the IEN Hub capital program in the Southwest Region of the Wireless (RAN) Network

• Facilitate activation of new Medium to Large IEN Hubs by coordinating the migration of Hubs to the new eNSE transport core

• Drive efforts to migrate to VZW Business via UT by managing all transport and construction upgrades to existing Hubs

• Primary program interface and communication channel between Operations, Fiber, RF, and VZW Business.

• Work cross functionally with Real Estate, Transport, Equipment, and Construction groups

• Used FUZE to track projects and prepare reports

T Mobile, National Development Strategy Technology, Remote Nov 2020 Nov 2023 SR. Engineer Systems Design

Partnered with national & regional stakeholders toward project development pre-project funding

• Validate & provide in-building solutions and costing for sales opportunities & RFPs related to T-Mobile for Business, T-Mobile for Government, BYOC, and special in-building projects

• Provide Engineering Estimates for contract negotiations

• Provide detailed coverage analysis & reports for special events at targeted venues.

• Provide iBwave deigns for targeted locations inside stadiums, golf courses, shipping ports, etc.

• Work with DAS & RAN vendors on design of BYOC & private 5G solutions.

• Reviewed CDs & SOWs to determine project costs for ROM costing

• Determined backhaul needs based on proposed technologies, venue type, and user count T Mobile, Alternative Coverage Solutions (ACS), Detroit, MI April 2017 – November 2020 SR. RF Engineer

Lead In-Building Design Engineer for Detroit, Cleveland, Pittsburgh & West Virginia

• DAS, Small Cell, & D-RAN design and optimization

• Calculated BTS power level settings for a neutral host DAS environments

• Verified link budgets based on frequency, power, & bandwidth

• Prediction modeling to determine coverage levels and potential interference

• Hardware selection for high-speed data transport & low PIM

• Troubleshoot system issues involving accessibility, retainability, & quality

• Monitored & optimized networks ensuring low latency, high throughput & seamless connectivity T Mobile, Alternative Coverage Solutions (ACS), Detroit, MI May 2016 – April 2017 SR. RF Engineering Consultant

Sr. In-building Engineer for Detroit, Cleveland, Columbus, Pittsburgh Nashville, Louisville, Kentucky

• Managed DAS and Small Cell Design and optimization

• Created Scopes of Work for design & data collection vendors

• POC for vendor selection and equipment purchasing

• Directed various projects in multiple locations, including: o Detroit Airport – Detroit

o First Niagara Pavilion – Pittsburgh

o P&G Paints Arena – Pittsburgh

o Nationwide Arena – Columbus

o Papa John’s Stadium – Louisville

o Cleveland Hilton – Cleveland

o Progressive Field – Cleveland

T Mobile, Alternative Coverage Solutions (ACS), Bellevue, WA August 2015 – May 2016 SR. RF Engineering Consultant

Lead Design Engineer for the West Region

• Managed DAS and Small Cell Design and optimization

• Directed numerous projects in various locations including: o T-Mobile Arena - Las Vegas

o Golden 1 Center – Sacramento

o ASU Sun Devils Stadium – Tempe

o ASU oDAS Campus Design - Tempe

o Concord Pavilion – Concord

o Toyota Amphitheater – Wheatland

AT&T Services, Antenna Solutions Group (ASG), Phoenix, AZ January 2014 – July 2015 SR. RF Engineering Consultant

Led the implementation of various Outdoor and Indoor DAS design and optimization, and In-building & Small Cell Solutions.

• Optimization Lead for Super Bowl XLIX @ University of Phoenix Stadium, Glendale, AZ. o First-time deployment of a 4 Carrier LTE venue using – 700MHz, PCS & AWS o Liaised & coordinated efforts between Crown Castle, ALU, TTS, Verizon, & Qualcomm

• Supervised and directed operations on the LTE overlay & optimization of 305 oDAS nodes in Scottsdale & Tucson, AZ, and acted as the Lead Desing Engineer on State Farm Marina Heights Campus iDAS

• Provided BTS/switch support on ALU equipment during optimization & troubleshooting

• Atoll Super-user for AZ/NM

o Created & Managed oDAS nodes

o Ran coverage predictions for planned sites

o Analyzed site candidates to determine primary candidate AT&T Mobility, NP&E RAN Design & RF Engineering, Las Vegas, NV July 2013 – Dec 2013 SR RF Engineering Consultant

Outdoor Small Cell Design.

• Site Selection & coverage analysis using tools to compensate for environmental effects of signal degradation

• Used Atoll & MapInfo for: Site Selection, Coverage Analysis, Predictive Modeling, CW Drive Test Analysis, Terrain Analysis AT&T Services, Antenna Solutions Group (ASG), Pleasanton, CA November 2010 – July 2013 SR RF Engineering Consultant

RF Engineering Consultant & team leader. Responsible for Outdoor and Indoor design of DAS networks.

• Provided Ericsson BTS switch support during optimization and troubleshooting while demonstrating superior expertise with TE, CommScope, and CMA OEMs.

o Indoor projects: Moscone Convention Center, San Francisco International Airport, Oracle Arena, Oakland Airport o Outdoor Projects: Palo Alto – 99 Nodes, Oakland Hills – 81 Nodes, SF Francisco – 40 Nodes, Bart Berkley Underground AT&T Mobility, Market RAN, Pleasanton, CA August 2010 – November 2010 DAS SME

Special Events Team Lead – DAS Optimization

• Projects include Moscone Convention Center, Oakland Coliseum, and AT&T Park. o Review collected data & stats to optimize network NextG Networks, Nationwide June 2006 – August 2010 Sr. RF Engineer / Project Manager

Designed, Integrated & Optimized indoor and outdoor DAS networks. Engineering Lead & Project Manager of various DAS Projects nationwide. Performed ATP, Commissioning, & Troubleshooting. Resolved Trouble Tickets.

• Specialized in Andrew ION-M Systems

• Demonstrated experience in ADC URH Systems, UMTS, CDMA, GSM, iDEN, EVDO, Optical Delay, and Link Budget Calculations

• Prepared Antenna System Sweep MOPs various projects

• Trained engineers & teams in a classroom setting and in the field in preparation for: o 1200 node New York City outdoor DAS deployment

o 400 node Philadelphia outdoor DAS deployment

• Coordinated a 13-man team of Engineers, Technicians in ATP (Acceptance Test Procedures), and commissioning of a 326 node DAS System for Cricket Communications in San Diego, CA.

• Designed, installed & optimized Bi-Directional Amplifiers (BDA) at these locations: o University Hospital – University of Utah

o Disch Falk Field, Locker Room & Coaches Offices Orthopedic Hospital – University of Texas, Austin

• Designed & optimized outdoor DAS at these locations: o Cricket San Diego, CA

o Metro PCS, LA, Dallas, New York

o Metro PCS, Flint/Saginaw, MI

o ATT, Tucson, AZ

o Sprint, Carlsbad, CA.

o Verizon, Oakland Hills, CA

o Verizon, Houston, TX

• Designed and optimized for universities and colleges: o Metro PCS, T-Mobile, Sprint – University of California, Santa Cruz o AT&T, Verizon, Sprint - University of Texas, Austin o AT&T, Verizon - Texas A&M, College Station

o AT&T, Verizon – University of Utah, Salt Lake City Extensive experience as a Senior RF Engineer & Project Manager across major wireless carriers and vendors, including Nokia, Ericsson, Motorola, Centel Cellular, Sprint PCS, Western Wireless, Voicestream, T-Mobile, Cingular, Nextel and AT&T. Led RF design, optimization, and deployment efforts for LTE, UMTS, GSM, CDMA, iDEN, and AMPS networks across domestic and international markets. Held key roles in regional & market engineering, project management, and network performance analysis. Contributed to computer engineering and electronic systems in early career roles. U.S. Navy Aug 1982 – Feb 1992

Fire Control Technician (Missiles & Guns)

• Conducted system diagnostics, requirements analysis, and performance assessments on advanced weapons control systems including the Vulcan Phalanx Close in Weapon System (CIWS). Managed government-furnished equipment (GFE) and contractor-furnished equipment (CFE) for weapons and radar systems.

• Performed preventive maintenance, troubleshooting, system integration, and validation of high-precision targeting technologies.

• Maintained security protocols for communications and weapons handling in classified environments. BA Interpersonal and Group Communications January 1994 – May1998 Trinity International University, Deerfield, Ill

Electrical Engineering, September 1991 May 1992

University of Illinois at Chicago, Chicago, Il

Electrical Engineering, August 1985 December 1988 Illinois Institute of Technology, Chicago, Ill

Atoll

Python L1

iBwave Level 3

Solid Product Training & Certification

JMA Teko Product Training & Certification

5G NR Air Interface

5G Advanced LPWA for IoT

5G RAN Signaling & Call Flow

5G Air Interface & RAN Numerology

LTE Air Interface Primer

Mastering LTE Interface

LTE RAN Signaling & Operations

LTE RF Planning & Design Workshop

AT&T RF Engineering Silver Certification

WCDMA RF Performance Mentoring - Ericsson

Radio Network Tuning - Ericsson

Statistics Handling – Ericsson

Frequency Planning – Ericsson

Cell Planning Principles - Ericsson

IS-95A The CDMA Standard – Ericsson

CDMA Optimization – Ericsson

TIA/EIA –95-A/B – Ericsson

AXE Operation and Maintenance - Ericsson

Network Optimization – Motorola

IS-95 Implementation – Motorola

NAMPS 20 Channel Rack and LPA – Motorola

EMX2500 Operation and Maintenance – Motorola

IDEN Systems - Motorola

CDMA Optimization and Theory – Lucent

Planet Training – MSI

UMTS Overview – Nokia

UMTS Design – Aircom

UMTS Optimization – Qualcomm

Small Cell Solution Features, Net Ops & Architecture Optima

BTS Site Manager

LTE/UMTS OSS

Business Objects

Atoll, ANET, Deskcat

RNO MRR, Agilent

FAS, NCS, CTS, NMS, SENER,

NMS, XCAP, Asset, AIMS, Remedy, Granite

CHA, CNA, Metrica, Asset, Kingfisher, Remedy

SAM, Planet, SAM, NED, Eyeball, TOM

NPS-X, RSAT, NPO, WMS

MapInfo

iBwave Level 3

Spectrum Analyzer

Optical Power Meter

Optical Scope

Signal Generator

Coyote Receiver

Dragon Transmitter

Agilent - Data Collection

Wind Catcher, TEMS, Actix

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