Senior Electrical Engineer

Darrell R. Hale

9409 Fairview Avenue, Laurel, MD 20723

301-725-6618 (h) 202-368-7219 (c)




Principal Engineer, ACS, a Xerox Company, Columbia, Maryland 2002 - 2010; 2013 - 2015

Experienced with the installation and repair of Automatic Vehicle Location (AVL) systems used by public transit and utility agencies. These systems include the elements of 2-way LMR radio communications, GPS position reporting, in-vehicle passenger text and audio messaging, automatic passenger counting, vehicle driver text messaging system, and monitoring the status of other third party vehicle systems.

Microsoft Access Consultant & AMDT Repair Technician, OpalStaff, Columbia, Maryland 2011 - 2013

Continuation of the Xerox Principal Engineer position as a contractor, prior to being rehired full time.

Repair laboratory, Division headquarters, Columbia MD. 2004 - 2013

Actively involved in all phases of repair and testing required to service the custom vehicle equipment produced by ACS. Work performed in the repair laboratory located within the corporate offices.

Collaborate with management to positively support our customer relationships.

Collaborate with the hardware and software development teams to stay current with equipment updates.

Create, customize, and maintain Access Databases to track the customer's equipment in the repair cycle.

Developed new test system to reprogram and in-circuit test HC11 microcontrollers used on production PCBs.

Develop and modify control scripts used by automatic test equipment (ATE) in the repair process.

Technical Lead for the in-house repair team, providing oversight, training, and work-flow direction.

Prioritize repair efforts, keeping multiple customers supplied with sufficient operational units on-site.

Identify repair trends which require changes to repair techniques, production equipment, or on-site training.

Utilize test equipment to troubleshoot circuits and systems.

Build new test fixtures and repair old test fixtures as needed. Design and fabricate PCBs for test fixture use.

Field Installation & Repair, Michigan, Nevada, California, and District of Columbia 2002 – 2004

Installed new equipment using preassembled installation kits for vehicle fleet upgrades, as part of a small team for short periods (i.e. weeks). Maintenance and repair of previously installed equipment, typically as the only company employee on-site for long periods (i.e. months). Work performed on-site within the customer's garages.

Identified and resolved unforeseen issues that might delay installation or repair efforts.

Direct contact with customer representatives to maintain good working relationships.

Support customer dispatch centers, server rooms, and radio tower sites to reduce travel for other employees.

Assisted in customizing the AVL products as needed for installation into specific types of vehicles.

Maintained on-site tools and spare equipment to support ongoing work.


Electrical Engineer, Honeywell Technology Solutions Inc., Columbia, Maryland 1991 – 2001

Experienced in computer control systems, data communications, intelligent highway systems, satellite tracking, and GPS/atomic time systems.

Subsystem Lead, Central Artery Tunnel "Big Dig" Highway Project, Boston, MA. 1999 – 2001

Managed all activities related to the project's fiber optic video and data communication networks. The fiber optic network connects approximately 800 cameras and equipment cabinets distributed along the roadway with the central control center.

Researched and identified all contractual requirements related to the fiber optic subsystem.

Selected and submitted proposed equipment for customer's approval for use on the job site.

Coordinated and answered all customer questions related to the fiber optic subsystem.

Initiated and coordinated equipment procurements, under a strict budget and tight delivery schedule.

Created the fiber splicing guides and fiber-to-equipment run assignments from high-level design documents.

Created system documentation in coordination with test, QA, maintenance, and training teams.

Generated detailed construction work packages used by the unionized installation subcontractors.

Identified and implemented work and design impacts caused by ongoing design and contract changes.

Integration Engineer, "CARAT" Transportation System Project, Charlotte, NC. 1999

Installed, configured, and tested the computer and network equipment in the control center and development lab.

Setup hardware for NT Workstations & Servers, Cisco ISDN routers, DEC terminal servers, remote dial-up RISC routers, Harris WS3000 SuperScanner, Video Matrix Switch, and various network hubs and switches.

Configured Windows NT for domain-based networks in the development lab and operational control center.

Oversaw the ISDN circuit between the lab and control center LANs for software delivery and testing.

Supported development of a UNIX-based HP OpenView Network Management monitoring workstation.

Installed secondary CCTV camera controller backups from COHU in case of an Ethernet network failure.

Provided RS-232 and RS-422 serial communication troubleshooting support to programmers developing custom firmware used in proprietary stand-alone controllers.

Subsystem Lead, NASA Mila-Bermuda Re-engineering Project (MBR), FL & Bermuda 1996 – 1998

Designed, installed, and tested the new ground station control system to consolidate the operation of multiple equipment subsystems at a single operator workstation. The unified station control system is used at the Kennedy Space Flight Center (Mila), Bermuda, and Ponce De Leon spacecraft tracking stations.

Developed the operator interface screen structure used at the station's master control and status consoles.

Setup and testing of the computer systems, Ethernet networks, and serial-based data controller links.

Subsystem Lead, McMurdo TDRS Relay System (MTRS), McMurdo Station, Antarctica 1994 – 1995

Participated in planning and preparation for travel to the U.S. Antarctica research station McMurdo Station. Upgraded the existing satellite ground station to streamline operations of the RADARSAT science project. Eliminated data tape shipping delays by transmitting the science data directly to the Continental US through a TDRS relay satellite. Use of non-traditional transmission solutions to overcome geography and climate problems found in the McMurdo Station area.

Developed and deployed equipment to survive unattended in sub-zero Antarctic winter conditions.

Setup and managed the power and data interfaces connecting all ground station equipment.

Developed custom power switching equipment to operate from the station's 24VDC battery system.


Subsystem Lead, Gamma Ray Observatory Remote Terminal System, Canberra, Australia 1992 – 1994

Participated in science data recovery efforts after data recorder failures onboard the Gamma Ray Observatory (GRO) spacecraft. Expanded NASA's spacecraft data network by constructing a new Australian ground station and re-purposing a TDRS communication satellite, significantly improving capture of real-time data from GRO.

Managed the successful procurement, testing, and implementation of the "Multiple Access Beamforming Equipment" (MABE) ground station subsystem critical to the project's success.

Co-developed support systems, including an orbital calculation processor and a radio calibration system.

Met tight project schedules, which included continental and overseas travel assignments.

System Lead, NOAA Analog Slaving System, Wallops Island, VA. 1991 – 1992

Developed a replacement for the existing, obsolete and failing system. The slaving system quickly and efficiently combines a number of normally separate antennas, so they all will point at and follow a single spacecraft in unison.

Designed and oversaw construction of the central relay-switching matrix and remote control/status panels.

Developed analog and digital circuits.

Created mechanical drawings using tools such as AutoCAD and P-CAD.

Wrote the system Installation Instructions, and the system Operations and Maintenance Manual.


Bachelor of Science, Electrical Engineering, Cum Laude, Capitol College, Laurel, Maryland.

Certified Fiber Optics Installer, Electronics Technicians Association. (Expired)

NASA Certified Soldering Technician, AlliedSignal Technical Services. (Expired)

Training in: WonderWare, Omniserver, Telephone Systems.


Secret Clearance - Acquired July, 1994. (Expired)


Wilderness Search and Rescue team member for 8+ years. (Maryland Search and Rescue Group, a member team of the Appalachian Search and Rescue Conference.

Cave rescue instruction teaching staff member for 9+ years. (Eastern Region of the National Cave Rescue Commission.

  • ID#: 117641
  • Location: Laurel, MD , 20723

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