Project Manager Engineer

Tom Tewalt

***** *. ********* **. ( Oregon City, OR 97045

503-***-**** Mob. ( *******@*********.***

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Tom has extensive experience in the system design and optimization of Land

Mobile Radio systems, Cellular Systems and Microwave systems ranging from

25 MHz to 40 GHz using both analog and digital technologies. The

optimization not only included analysis from co-channel interference, but

adjacent and out of band interference. The experience also includes

component level testing on 25 MHz to 2 GHz radio systems. In addition has

been through a CCNA College course, along with Switch ( cellular voice

switch ) and Network Engineering ( data switch, routers servers ), Project

Management and Construction Management. Only Microwave and RF Design are on

this Resume.

Design work included the establishment of link budgets for the project,

system noise level and capacity planning using Erlang tables on systems as

large as 200 cites on Phase 1 roll outs.

RF ( 100khz - 39 GHz ), Analog, and Digital Circuit Design and testing.

Design and optimization of digital technologies include:

800 MHz proprietary4 channel TDMA digital modem in a 4 KHz spectrum air to

ground - McCaw Claircom ( AT&T)

802.11 A - 5.3 GHz Cell sites and 5.8 GHz mesh network using OFDMA -

MetroFi

800 MHz iDen - McCaw (Nextel) International, Nextel USA, Motorola USA.

800 MHz IS-136 TDMA - McCaw Comm. ( AT&T ).

900 MHz GSM - Slovakia, McCaw Ireland, Telstra Australia.

900 MHz OFDMA - Wireless ISP - Sandynet Sandy, Or

2.3 GHz Proprietary TDD - Ricochet Portland, Or

800 MHz CDMA - US West, Portland, Or., Optnus Australia

800 MHz Tetra - Germany, McCaw (Nextel) International

800 MHz CDPD - McCaw Com - Oregon.

6 GHz to 39 GHz Microwave Design ( 400 Links ) for Advanced Radio

Technology

5 GHz to 80 GHz Microwave Design ( 330 Links ) For ClearWire ( 50 Mbps to 1

Gbps)

Analog System Conversions analysis and phases

800 MHz Trunking to iDen

800 MHz IS-54 to IS-136 TDMA,UMTS and CDMA

150 MHz County Fire system ( frequency additions with sub-audible tones )

The planning platforms used included Anet, DBPlanner, Motorola's NetPlanner

and Wizard RF planning software tools for Analog, Digital Air-Ground, TDMA,

iDen, GSM, 2.5G, Muni 802.11, WISP (900 M, 2.4 G & 2.3 G) and CDMA

Cellular Systems.

RF Experience

o Propagation Research and Analysis for Mobile Radio, Wireless ISP's,

Cellular, PCS, Microwave, Air-to-Ground using Frequencies from 150

MHz, to 40 GHz, investigating the affects of foliage, buildings, rain,

mist, Raleigh and Rician Fading on loss, inter-mod, noise floor, multi-

path and reflections.

o Developed software that will determine how many 5.3 - 18 GHz radios

can be used at a site, depending on radio and antenna used.

o Design of Locate Services on UMTS using PCAP messaging.

o Designed 802.11a Muni-Wireless.

o Digital Modem design and analysis ( through-put, gains, C/I, adjacent

power) utilizing different Modulating schemes from BPSK to 64 QAM from

6 KHz to 40 MHz ( Microwave, TDMA, CDMA, iDen, Air-Ground) for

bandwidth, interference, data timing, doppler shift, and bit

efficiency.

o Design a pre-amp that could fit into a Ericsson 882 Cellular Site,

bring the one channel sensitivity down from -114 dBm to -120 dBm. The

product is still being sold through Celwave.

o Designed a cost efficient broadband repeater ( A-Band Cellular ) with

80 dB of gain and 10 watts output, is presently sold by Celwave.

o Cost analysis on new cell sites using demographics, highway traffic,

budget and payback schedule.

o Antenna design and post analysis failure, with respect to gain,

pattern, inter-mod and noise level.

o Resolve Synchronization issues in US TDMA ( IS-41 ), Claircom

Proprietary Digital, CDMA.

o Packet Level Debug for IS54, US TDMA, Ethernet, CDMA, GSM, iDen and

Proprietary Digital Air Interfaces.

o Microwave system design using bandwidth, interference, link-budget,

antennas, loss, fading and reliability using Full Duplex equipment

along with TCP/IP radios

o Initial US-TDMA design and debug, having Ericsson redesign their TDMA

modulators for reliability and spectral reductions along with the

phase lock loops at the T-1 level for the cell sites.

o Aided Hughes Network System in a transmit spur for the DirectTv system

by adding a filter near the mixer.

o Interference Analysis with respect to out of band interference, co-

channel, adjacent channel, digital co-channel and adjacent channel,

noise floor analysis, and inter-modulation.

o System Designs for Analog Cellular, US-TDMA, Air-To-Ground, GSM, CDMA

and iDEN (Coverage, site design, antenna design and traffic capacity)

that included Broadband repeaters and frequency selective repeaters

(ASP).

o Analysis and Optimization ( call set-up, link budgets, balanced

budgets, hand-offs, frequency assignments, code assignments ) for

Cellular Systems using Analog, US-TDMA, CDMA, GSM, Air-to-Ground and

iDen using spectrum analyzers, and various RF Propagation Collection

tools on the mobile ( such as TEMS) and switch side.

o Developed software and hardware to collect coverage for Air-Ground

Telephony ( 18,000 to 40,000 feet).

o Submitted Antenna and Filter Designs to Celwave for special needs,

which they built.

o Submitted Papers to the ARIN ( Japanese National Radio Committee),

which they accepted and allowed Advanced Radio Technologies to test

their equipment. The paper included full radio design ( modulator,

antenna, antenna sidelobes, software gains, internal losses and

hardware gains, along with rain fade, system gains, path loss, co-

channel and adjacent channel interference.

o Wrote software for Advanced Radio and Claircom ( McCaw's Air-Ground

Telephony ) that produce system analysis and performance on microwave

stations, air terminals and base stations.

o Design In-house repeater systems for in-building coverage.

o Design and Optimized Wireless ISP's Systems that included Metricom's

Richochet ( 2.3 GHz and 2.4 GHz systems), 5.7 GHz canopy system, 900

MHz Waverider, and 2.4 ISM Macro-systems using 802.11 high gain

systems, which included repeater set-ups using WaveRider.

o Software Tools used for RF Propagation analysis include Excel

Spreadsheet, ANET, DBPlanner, Wizard, Motorola's Netplan, and

Comseach's Microwave Planner.

o 10 years of PCS/Cellular Design and Optimization, including debugging

of Original Digital Systems - TDMA, CDMA, CDPD, Air Telephony, and

iDen.

o Wrote a white paper on 39 GHz microwave, which convinced the ARIB to

allow ART to operate in Japan.

o Tower Consolidation analysis with respect to interference from co-

channel, 3rd Order Harmonic, adjacent channel and out of band

interference for frequencies from 90 MHz to 6 GHz, including broadcast

channels.

o 150 MHz System Redesign, Radio Recommendation with simulcast paging.

Innovative Designs

o Developed a novel broadband repeater, which was later used by Celwave

communications

o Engineered and Deployed Frame over Voice Router - Router ( Motorola)

with a PBX interface to save a company $10,000 / month in long

distance charges.

o Successfully integrated to DSLAM's ( TNT - Stinger ) using ATM, to

save cost in TCP/IP card.

o Developed software that could determine coverage and hand-off issues

for the air to ground

o Submitted engineering changes to Bell Labs for modifications on the

Cell Sites, Switch and Software.

o Developed software to capture air - ground signals for coverage

analysis.

o Developed radio test equipment utilizing TTL logic, mixers, VCO's and

RF amplifiers to aid the technicians in repairing the Air-to-Ground

radios.

o Installed Linux / Oracle on a network to change out Access.

o Developed of 500 Microwave links from 2 GHz to 40 GHz.

o Developed software to analyze the RF performance of A-T-G ground

stations and air terminals.

o Designed space saving antennas for McCaw Cellular.

o Developed and implemented special routing techniques for the Lucent

Autoplex 1000 switch.

o Developed statistical software for the Cellular and Air-to-Ground

Telephony.

Consulted to Major Laboratories

o Redesigned the net-loss plan and submitted the information to Bell

Labs, which was incorporated.

o Submitted 800 MHz RF combiner and filter design changes to Bell Labs,

which were incorporated.

o Submitted transmitter design changes to Hughes Network on a spectral

problem with the Direct TV.

Employment History

Consulting 2001 -

Present

802.xx Wireless Networks 2.4 to 5.8 Ghz ( last mile solutions), cell site

design for 5.3 GHz Cells.

Design and Maintain 900 MHz Data Wireless Networks - Waverider ( last

mile solutions).

DSL Deployment, Wireless ISP Deployment ( Lucent DSLAMS with ATM).

Microwave Engineering / Telco Engineering ( including TCP/IP MW)

Wireless Data Acquisition

TCP/IP Firewalls - routers ( Linux, Cisco, Motorola, IPTABLES, RIP, OSPF,

BGP)

Script Writing - Bash, Perl, Windows Scripting, PHP

In-Building Wireless Systems and Wireless ISP Design and Linux

Administration

Linux Servers ( DHCP, DNS, POP, Postfix, Sendmail, CYRUS, Radius)

Voice over Frame Engineering and VPN networks.

Windows Servers - 2000 and XP.

Consulting on Start-up Businesses and Business Plans.

Identified configuration and software problems with New installed

Ericsson CDMA 1xrtt system.

Aided the Post 2004 Iraqi Government ( with ICANA ) in Changing .IQ from

all Government.

Nextel Optimization

Designed 5.3 GHz Cell sites, 5.8 GHz Muni PTR mesh network. - MetroFi

Developed Link Budgets, Co-Channel interference to increase on site

capacity for 2.4, 5.3, 5.8, 11 and 18 Ghz equipment.

Clearwire Microwave Engineering and optimization with LOS and nLOS links,

capacity planning and EMI papers.

Zulutime - Patent Pending - Location services by eliminating GPS.

RF Manager & Market Manager, Delta Groups Engineering, Inc.

2000 - 2001

RF Engineering

Market Manager ( of Architects, Project, Site Acqusition, and

Construction Managers, along with office personnel)

Site Design Qualification

Business Planning

Linux / Network Administrator

Sales ( Consulting Services).

RF design for Ericsson GSM system, Ricochet Wireless data system ( 2.3 /

2.4 GHz) and AT&T WS DWS ( 2.4 GHz).

Operations Manager / Project Manager, Covad Communications

1999 - 2000

Central Office Manager

Field DSL Manager

ILEC Technical Interface - Qwest

Warehouse Manager

Capacity Planner

RF Engineering Manager / Project Director, Watco LLC ( Australia )

1998 - 1999

RF Manager and Project Manager for 200 Site System Motorola iDEN Network

Chief Digital Transmission Engineer ( MW & E-1)

Sun Administrator

Optimization for Philippine iDEN System

Optimization for Ericsson GSM system.

Sr. Microwave Engineer / Project Manager, Advanced Radio Telecom

1997 - 1998

Microwave Engineer (5 - 40 GHz)

Project Manager ( ATM Switch / Microwave / routers)

Sun Administrator ( Solaris 2.6)

Technical Director / Project Director, McCaw International

1996 - 1997

General Manager / Technical Director - Argentina

Controlled Marketing, Sales, Engineering, Operations

Technical Director - Philippines

Developed Budget, Design, Implementation, and Operations

Novell 3.0/4.0 LAN Administrator

RF - Microwave Engineer - McCaw Com. 1995 -

1996

Microwave Engineer

RF ( Cellular) Engineer

CDPD Engineer

Traffic Analysis, Projections and Future capitalization projections.

SR. Systems Engineer - McCaw Com. Air-Ground Telephony

1993 - 1995

Fiber Engineer

Chief Technical Troubleshooter

Radio Developer

System Developer

Software Engineer

Codec Analysis

GSM Switch Engineer ( Wide Body Aircraft )

Performance Engineer

Statistical Analysis

Antenna Engineer

Noise Cancellation Analysis

Micro-Cell Developer

FCC Liaison

Transmission Engineer - Frame Relay, T-1, MW

Interference Analyst

RF Engineer / Project Manager, McCaw Cellular Communications

1985 - 1993

Microwave Engineer Field Engineer

Performance Engineer Project Manager

( Switch Cuts )

Cell Site Technician Unix

Administrator ( 3B20 & 3B5)

Transmission Engineer RF Engineer

Radio Engineer Switch Engineer (5ESS

along with DS3 & T-1)

Fiber Engineer Novell 2.0 LAN

Administrator

Voice Mail Technician Sales Engineer

Design Systems with in $20 Million Future Market and Demographics

Analysis with an expected system 2 year payback

Technical Specialties

Radio Engineering Switch Engineering

Microwave Engineering Project Management

Network Engineering - Cisco, Motorola, Linux, Windows Servers

Technologies that were used, debugged, developed or analyzed.

IS-54, IS-136, IS-41, IS-95, iDen, GSM, ESMR, TDMA( OQPSK, 8PSK,

16QAM), IEEE 802, ISDN, TCP/IP, Frame Relay,

ATM, DS1, DS3, DS0, E-1, T-1, MFRC-R2, MF, SS7, PTUP, TUP, 4wE&M,

2wE&M, ADPCM, DCS, 8kb and 9.6 voice

coders, ring nodes, X.25, RS-232, SNA 3270, Unix System V, 'C', Fiber

networks, Windows/NT, Linux, Oracle, Access, Firewalls, Routers, Visual

Basic, C++, and MsDos, DHCP, RIP, OSPF, DNS, BGP, VPN.

Registration

FCC General Class License - Radar Endorsement

Education and Short Courses

BS Electronic Engineering Technology, Oregon Institute of Technology,

1991

George Washington Univ.- Microwave Engineering Ericsson Switch and

Cell site Certifications

Lucent Switch and Cell site Certifications Project Management

Courses

Novell Network Course TCP/IP courses

Frame Relay and ATM Courses Oregon Institute of

Technology

Full CISCO CCNA Linux / Unix Courses

CDMA & GSM Courses AS400 and iSeries

Contact this candidate