04. Award Contract - KGEZ Tower Mitigation ProcessCity of Kalispell
Post Office Box 1997 W Kalispell, Montana 59943-1.997 - Telephone (406)758M7700 Fax (406)755-7758
_.
REPORT TO: Mayor Pam Kennedy and Ka].i.spell City Council
FROM: James H. Patrick, City Manager
Fred A. Leistiko, City Airport Manager
SUBJECT; Award of Contract for KGEZ tower mitigation process
METING DATE; May 7, 2007
BACKGROUND.
I . The Kalispell City Airport has undergone major changes in the last two years. The airport
has been converted ftom a liability to the City of Kalispell into an economic engine that
has produced over $1 N1illion in new aircraft hangars; a first time ever FBo lease on City
owned property that just added three helicopters and four fixed wing aircraft to their
training fleet; a new upscale hotel and convention center that will become a fly -inn business
and vacation destination. The first phase of the airport expansion project was completed
last year and it provided new taxiways, parking ramp and thirteen new building sites for
aircraft hangars or commercial aviation businesses. All thirteen of the new sites are either
built upon or under lease wasting construction to begin. with the expansion of Phase I
came all the infrastructure associated with the proposed building sites, including sewer,
water, gas, electric and con naumcations.
2. The airport how has a published set of Standard Operating Procedures and a published set
of Nfinimurn Standards for doing business on the airport. These documents have given the
pilots and commercial operators on the airport a set of rules to abide by. The airport has
an overlay called the Airport Affected. Area which protects the airport from any legal
action from residences or businesses located in an area two aches off either end of the
runway and one mile on either side of the airport. All real estate transactions in the AAA
will have a notice on the deed indicating the property is in an Airport Affected Area.
3. Approximately 75% of the airport is now secured with proper fencing to keep foot traffic
and vehicular traffic off of the Airport operational Area. This provides a safer
environment for moving aircraft on the airport. There are currently 62 aircraft
permanently based at the City Airport and more have expressed a desire to move their
base to the airport as soon as additional hangar space is available to house their aircraft.
This count is up from. 54 aircraft just one year ago.
4. In FY 2005 the Kalispell City Airport was placed on the NIPAS list with the FAA. This
entitled the airport to participate in funding through the Airport Improvement Program
(AIP). This also entitled the airport to receive an annual grant known as non -primary
entitlements equal to $15 0, 000 a year to be used for FAA approved projects on the
airport. Since FY05 the grant has been accumulating with the FAA and now totals
$4501,000. In 2008 the grant total will be up to its maximum of $600,000. After that we
will not be allowed to accumulate more than the four years worth of non-pnm.ary
entitlements.
5. The airport has applied for reimbursement front the FAA on two projects we have
completed:
a. The airport has applied for reimbursement (95%) of the cast of the Phase I project
completed last year. This should come to approximately $1.3 Million.
b. The airport has applied for reimbursement (95%) of the cost of acquisition of certain
property that will be part of the expansion. This should came to approximately $1.2
Million.
6. The FAA has stated that we are not entitled to draw any of the funds set aside in para. 4
5 until we have mitigated the KGEZ tourers. Mitigating the towers means we have to
remove them from the protected airspace by one of several means. The Airport has issued
an RFP to study the mitigation process and give the City Airport some options. This RFP
is complete and a broadcast engineering firm from Seattle, WA was selected to do the
project. They are currently waiting for the City to issue the contract.
RECOMAlENDATTON.
Council approve the contract with Hatfield and Dawson Broadcast Engineers, Seattle,
WA. to do the engineering study that will provide the City with the options it has to
mitigate the tower situation.
FISCAL EFFECTS:
The Airport Enterprise Fund has set aside $200,000 in reserve to begin this project. The
engineering study will cost approximately $34,000 to get us to the decision stage on what
options we have to mitigate the towers.
ALTERNATIVES: Done
Respectfully submitted,
a es . Patrick
City Manager
Fred A. Leistiko
City Airport Manager
PROPOSAL OF
PLAN TO MITIGATE RADIO TOWERS IN PROTECTED AIRSPACE
KGEZ (AM) ANTENNA
CITY OF KALISPELL AIRPORT, KALISPELL, MT
OCTOBER 2,2006
HAYFIELD & DAWSON CONSULTING ENGINEERS
BENJAMIN F. DAWSON III, PE
THOMAS M. ECKELS, PE
STEPHEN S. Lo(.,XWOOD, PE
DAVID J. PINION, PE
PAIJIL W. LEONARD, PE
ERIK C. SWANSON, EIT
TtiOMAS S. GORTON, PE
Clerk of city Council
City Hall
312 - 1 't Avenue East
Kalispell, MT 59903-1997
HATFIELD & DAWSON
CONSULTING ELECTRICAL ENGINEERS
9500 GREENWOOD AVE. ICI.
SI ATTLE, WASHINGTON 98103
September 29, 2006
REFERENCE: RFP for Plan to Mitigate Radio Towers in Protected Airspace
Ladies and Gentlemen:
TELEPHONE (206) 783-9151
FACSIMILE (2-06) 789-9834
E-MAIL hatdaw(�-()hatdaw.com
TAMES B. HATFIELD, PE
CONSULTANT
MAURY HATFIELD, PE
CONSULTANT
OAKHURST, NWS
AAUSTRIALA
Hatfield & Dawson Consulting Engineers, LLC is pleased to have been selected to respond to
the City of Kalispell's Request for Proposals for engineering services for evaluation of possible
changes to the antenna system of standard broadcast ("AM") station KCEZ, near the Kalispell
City Airport.
As we noted in our response to the initial Request for Qualifications, we're particularly familiar
with the KCEZ antenna system as the result of work undertaken for the Montana Department of
Transportation in connection with the widening of Route 93, which forms the western boundary
of the antenna/transmitter site. As a consequence, we are aware of the specific requirements
for coverage and interference for this station, and its relationship to the airport and other nearby
relevant development. As outlined in the Request for Proposal requirements, we have listed
the major task items, together with an idea of schedule and the level of effort from the
engineers in our firm for the various tasks.
There are two items which may or will require the City to obtain professional services other than
those Hatfield & Dawson can supply. If we determine that a surveyed elevation for the location
of the KCEZ towers is necessary, a local surveyor's services will be required. If and when an
application is made to the FCC, if any new or modified tower construction is required, the
services of a qualified contractor will be necessary for the historical and tribal filings required as
a result of section 106 of the National Historic Preservation Act.
I have included an outline of the task elements together with project descriptions of some
notable recent AM antenna projects we've performed and qualifications of personnel who would
perform this project. Please advise me if there is any additional information which you require
or if there are .other questions I may be able to answer.
incerel
Benj. F. Dawson III, P.E.
President
encl.
Kalispell City Airport:
Modification or Relocation of Transmitting Antenna for KGEz (AM)
October 2, 2006
Hatfield & Dawson (H&D) is a Washington State consulting engineering firm with a specialized
practice in telecommunications and electromagnetic engineering. The firm has been in
operation in its present form since 1973 and is the successor to the practice of J.B. Hatfield, Sr.,
dating from 1945. The firm is established as an LLC and has a staff of twelve.
The principals and associates of H&D have extensive experience in all aspects of this specialized
field. The firm performs design work, government -agency and license -application engineering,
preparation of specifications, construction supervision, propagation analysis, measurements,
testing, and operation review of:
■ Public Safety and Transit Land -Mobile radio Systems
■ Communications and Radio Systems for FM and AM Broadcast
■ Closed Circuit Video and Data
■ Microwave Systems
■ UHF and VHF Television systems
■ Electromagnetic Engineering & Analysis
■ Electromagnetic Compatibility at Multi -User Communications Sites
H&D has a long history of innovative use of computational electromagnetics techniques for the
design, analysis, testing and implementation of antenna systems. our experience in medium -
wave antennas is unequalled. The same analysis methods are applicable to long -wave and HF
antennas. We have a record of successful work with both conventional and unusual antennas
at frequencies to the 1 GHz region. The firm makes extensive use of computer technology to
access allocation databases and digitized terrain data, for CAD -system design, and for
automated propagation studies.
Our principal engineers are among the world's leaders on Medium Wave C"AM") engineering
matters. They are the authors of a substantial portion of the current technical literature on the
design and implementation of Medium Wave antennas as well as significant papers on other
broadcast transmission subjects. A bibliography of papers and articles by H&D's engineers is
included as an appendix to this proposal.
We are experts in Medium Wave antenna system analysis, design, specification,
implementation, and testing, and are experienced in providing these services throughout the
world in a variety of environmental conditions. our engineers have on -site, design, or analysis
experience at many operating Medium Wave transmitting stations around the world.
We use established quality control, schedule maintenance, and cost control procedures. All
work undertaken by H&D is subject to a formal, documented internal quality control program.
This program includes independent review of all engineering analysis and recommendations by
technical team leaders.
Hatfield & Dawson Consulting Engineers, LLC
Kalispell city Airport:
Modification or Relocation of Transmitting Antenna for KGEZ (AM)
October Z, 2006
H&D's project management is efficient and straightforward. Each task and subtask will be
assigned according to workload levels and technical requirements to the staff members
selected, with major task assignments as shown in the organization chart. We are experienced
and skilled at quick project assignment and turnaround. H&D has a history of bringing projects
in on time and on schedule. This reliability has been particularly significant in projects where
time requirements have been very short.
Ben Dawson implemented a high priority site change for KPOJ, Portland, OR. After
extensive negotiations, the Port of Portland refused to renew the lease for the
antenna/transmitter site. Dawson determined that a site change to commonly owned
KEX's site was practical, and supervised the move, implementing temporary facilities in
less than the 30 days notice that had been given by the Port.
The licensee of two Spokane AM stations had obtained construction permits for
consolidation and diplexing of the two antenna/transmitter facilities, and station staff
had constructed the facility. H&D was called in to inspect the situation, recommend
necessary changes, and to perform the tune-up and license application, less than five
weeks before expiration of the construction permits, Jim Hatfield made preliminary
measurements, performed computer modeling of the antenna systems, designed
changes to the monitoring system and feed system, implemented the recommendations,
and supervised the measurements for the performance verification. The license
applications were fled on the last day of the construction permit validity, and the FCC
granted the licenses less than 30 days later.
We delivered the complete facility analysis, design, and, down to nuts and specifications
bolts, for the IBB Bahrain antenna system project at the beginning of the first Persian
Gulf war, in 30 days. This is especially noteworthy, since the 30 days included the
Christmas and New Year's holidays, when potential hardware suppliers were difficult to
contact.
H&D has unsurpassed experience in all the areas specified in the RFP. our customer service
philosophy is to provide high quality expert services that meet the client's needs in the most
cost effective manner possible. Most of our work comes from repeat business and client
referrals. We are proud of our stellar record. We have never gone over budget, nor have we
initiated any major change orders in over 30 years. In this project we are committed to
ensuring the level of client satisfaction that you expect.
Hatfield & Dawson consulting Engineers, LLc
Kalispell city Airport:
Modification or Relocation of Transmitting Antenna for KGEZ (AM)
October 2, 2006
Understandiqg and Scope of Work
The Kalispell city Airport has requested proposals to study and make recommendations for the
modification or relocation of the transmitting antenna of KGEZ (AM), presently located near the
Kalispell City Airport. As a part of this study we intend to accomplish the following tasks. The
exact tasks outlined in this list are subject to modification during the course of the project if any
additional factors that affect possible alternatives become apparent during the project.
Consult with the FAA and review and obtain final determination from the FAA as to exact
allowable height limits at each of the two existing tower locations.
Review of allocation circumstances for site change to determine any modifications to
KGEZ operation (power, tower height) necessary to comply with domestic and
international radio regulations. Produce an "area to locate" map showing the locations
where the KGEZ antenna can be located consistent with the interference analysis and
the service requirements to Kalispell.
These two tasks are crucial to determine if it is possible to re -use the existing site or if
relocation is necessary. Upon completion of these two preliminary tasks, a short memorandum
report will be provided. If the height limitations are so severe that it is not possible to use an
alternative antenna design at the existing site, this conclusion will be provided. The feasibility
of each of the following options will be accompanied by a cost analysis and recommendation.
Option one:
From the height limitations determined by the FAA, analyze possible antenna
configuration alternatives. There are three alternatives that should be reviewed. In
each case it will be necessary to determine the effect of the possible alternative "short"
antenna design on efficiency, bandwidth, and stability. The three alternatives are: (1)
Use of a short vertical radiator which is heavily top loaded with a conventional platform
or disc structure; (2) Use of a proprietary extremely heavily top loaded antenna using
pole and wire construction (the so-called "Kinstar" antenna); and (3) use of a multiply
fed box radiator of the Paran type. All three of these alternatives have serious
shortcomings, and the latter two have never been used for a directional antenna array.
The one well -documented operating Paran antenna in the U.S. is marginal for efficiency,
although the actual FCC efficiency requirements for stations such as KGEZ on very low
frequencies are somewhat relaxed from the normal requirements.
If a "short antenna" alternative appears practical from an airspace standpoint, it must
then be evaluated for electrical characteristics. Replication of the nighttime antenna
radiation pattern in particular may prove troublesome because nighttime interference
protection requires evaluation of the vertical radiation characteristics of the antenna,
which are largely determined by the antenna height. Therefore the exact nighttime
radiation pattern now employed by KGEZ cannot be exactly duplicated with an antenna
using shorter radiating elements, even if the location of the antenna is unchanged.
Hatfield & Dawson Consulting Engineers, LLC 3
Kalispell City Airport:
Modification or Relocation of Transmitting Antenna for KGEZ (AM)
October 2, 2006
Option two:
�o Examine the possibility of a diplexed antenna operation with KOFI or a possible future
station, construction permit BNP20041029ADI. In each case, the determination of
feasibility will require a reasonably substantial study. The KGEZ antenna requirement
for two towers requires substantial spacing between the towers to meet the FCC
mandated interference protection standards. Thus the total size of a site as well as
location of existing towers must be considered.
Option three:
Provide an analysis of the minimum size of property that would be useable for a newly
developed site in the areas identified on the `'area to locate" map.
Option four:
A fourth possibility is that the operation of KGEZ could be "downgraded" to operate
nondirectionally with reduced day and night power, or to operate with less power day
and night and a nighttime directional antenna that is simpler or requires less land area.
This would require an evaluation (by others) of the change in value, and compensation
under the applicable provisions of the Montana statutes,
After preparation and submittal of the necessary reports to the City of Kalispell, we will be
available to answer further questions and, if necessary, to provide a presentation to City
personnel. In addition, we will provide the follow-on services necessary to implement the
selected plan:
Provide support and exhibit material (including expert testimony if necessary) for land
use and other state and local permitting requirements.
Provide exhibit material for historical preservation consultants to allow compliance with
Section 106 requirements.
➢ Prepare and file any necessary applications for FAA review of proposed antenna tower
structure.
Prepare and file an application to the FCC for construction permit for change in antenna
location, if necessary, and any changes in antenna configuration, in consultation with
the KGEZ licensee's communications legal counsel.
Upon approval of the construction permit by the FCC and grant of any local land use permitting
that is required, we will provide for construction oversight. We can assist in the selection of a
contractor to perform the actual construction as well as providing design information for the
necessary equipment and installation. This group of services includes:
Antenna turning equipment design and specification
Construction planning and review
Final commissioning measurement
License application tasks
If the existing site is reconfigured, or if the site is moved to co -locate with another AM station,
the planning material we provide will include a set of step-by-step procedures to allow
continued operation of KGEZ as well as any other station affected, as provided in Sec. 73.1615
of the FCC rules.
Hatfield & Dawson Consulting Engineers, LLC 4
Kalispell City Airport:
Modification or Relocation of Transmitting Antenna for KGEZ (AM)
October 2, 2006
Task
Pierson �� �me, t4 u e, Deliverable
NrS
fl.apsed rime
from N" �a �
BFD
SSL
TSG
Initial Data Gathering
1. Establish FAA Height Limits
24
Includes travel to meet with
FAA
2. Determine FCC Radiation
8
Limitations
Status report
4
Deliverable to City of Kalispell
14 days
(Assumes reasonable FAA
response time)
Contingent item: Survey of
Local Surveyor
Tower Location Elevation
Required
Option One:
Evaluate possible alternative
40
20
A deliverable to City for option
30 days
antenna design configurations
1
at present site
Option Two:
Evaluate possible diplexed
24
10
10
40 days
antenna operation with KOFI
or new unbuilt station
Option Three:
Provide analysis of property 1
12
10
46 days
requirements for development
of a new site
Option Four:
Provide analysis of
6
4 A deliverable to City for
40 days
"downgrading" and possible
options
relocation to an existing non-
21 3,, and 4
AM tower or a new tower
location
Support Material:
Exhibit material for land use
6
10 days from
request
Expert Testimony
To be determined as required
Hatfield & Dawson Consulting Engineers,, LLC
Kalispell city Airport:
Modification or Relocation of Transmitting Antenna for KGEZ (AM)
October 2, 2006
'flask
Exhibit material for Section
106
FAA flings
FCC filing material
Construction Planning and
Review
Antenna tuning equipment
design and specification
Final commissioning -
adjustment and measurement
License application
Personnel, rime, Schedule, Deliverable Elapsed psed Time
Mrs Items M TP
BFD SSL TSG
As necessary 10 days from
request
Section 106 requirements to
be performed by a consultant
employed by city separately
from this contract
4 Delivered to City with FCC
filing material
24 20 days from City
Selection of Option
40 (Approximate labor times as Deliverable times
they are somewhat dependant
40 on the option selected.) to be determined
after FCC approval
40 80
10 20
Hatfield & Dawson consulting Engineers, LLC 6
Kalispell city Airport:
Modification or Relocation of Transmitting Antenna for KGEZ (AM)
October 2, 2006
The proposed project team is made up of three Registered Professional Engineers from Hatfield
& Dawson Consulting Engineers. All of the members of the project team have a long history of
working together successfully on numerous previous projects.
Benjamin F. Dawson III, P.E.
Stephen S. Lockwood, P.E.
Thomas S. Gorton, P.E.
Senior Engineer / Project Manager
Senior Engineer
Senior Engineer
Resumes for the engineering personnel proposed for this project are shown below.
BENJAMIN Fa DAWSON, P.E. Senior EngIneeer Project Manager
President Hatfield & Damon
Ben Dawson has 50 years of experience in telecommunciations Activg Registration
engineering. He has been responsible for the allocation engineering,
design, specification, construction supervision, rebuild and readjustment,
testing, and commissioning of dozens of complex medium wave antenna
systems, VHF and UHF transmitting systems, and dispatch and two-way
communications systems. Because of his experience and knowledge in
basic applied electromagnetic physics, the National Association of
Broadcasters has chosen Mr. Dawson each year for the past several years
as one of two experts to present a full day AM antenna system seminar at
the Fall NAB Radio Conference. He's been a member of US delegations to
ITU technical standards -setting conferences, and is the author of several
publications on antenna design. Hef was the recipient of the annual
National Association of Broadcasters Engineerin gAchievement Award for
Radio Engineering in April 2005,
Professional Engineer /
Electrical (since 1973)
Professignal AcUvibes
Member, IEEE Vehicular
Technology and
Broadcast Technology
Societies
Member, Association of
Federal Communications
Consulting Engineers
Member, Society of
American Military
Engineers
His earlier experience includes engineering and engineering management positions for radio
and television broadcasting companies, involving responsibility for facility design, specification,
and construction.
Representative „projects include:
■ Technical consultant for intersystem electromagnetic compatibility analysis,
measurements, and recommendations for a variety of Northwestern US locations.
■ Project engineer for multiple compatibility studies at the Mt. constitution communication
site adjacent to a state park on orcas Island, WA. This site has nearly 200 tenants, and
work included co -siting three FM stations and extensive cellular and trunked--repeater
systems with extensive land -mobile facility tenants.
■ Project engineer for the analysis of potential interference between the proposed KWFM
broadcast facility and the existing and proposed low band and high band VHF (50 MHz
and 150 MHz), 900 MHz, and microwave facilities at the El Paso Natural Gas and
Hatfield & Dawson consulting Engineers, LLC 7
Kalispell City Airport:
Modification or Relocation of Transmitting Antenna for KGEz (AM)
October Z, 2006
Southwest Transmission Cooperative Communications Facilities at White Hill -- San
Xavier in Tucson, Arizona.
Project engineer for the evaluation of the potential for interference between proposed
wireless telecommunications facilities and the existing and proposed high band VHF (150
MHz), UHF (450 MHz), 800 MHz, and 900 MHz facilities at the Puget Sound Energy
Communications Site at Mount Erie, The existing and proposed facilities at the site
include two-way radio systems, paging, and microwave relay systems.
Project engineer for a detailed study of the Rendezvous Mountain communications site,
located at the top of the Jackson Hole Ski Area in Teton Village, Wyoming. The study
included a complete inventory of the existing facilities at the site, a complete
intermodulation study, and an analysis of the potential for exposure of workers and the
public to radio frequency fields in excess of those specified in FCC MPE (Maximum
Permissible Exposure) guidelines.
PHEN S. LOCKWOOD, POE_ Senior Engineer
Partner, Hatfield & Dawson
Stephen Lockwood is an electrical engineer with more than 23 years of Adive Registration
experience in the field of telecommunications engineering. He
Professional Electrical
specializes in the development of system specifications, preparing
Engineer, WA, AK
interference analysis and documentation, conducting antenna and radio
Professional Activities
propagation analysis, inspecting telecommunications facilities, and the
construction of radio facilities. His background includes extensive
�
Senior Member, Insbt a of
Electrical and electronics
project management in the design and construction of communications
Engineers, Inc. (IEEE)
facilities from medium wave to microwave frequencies. work has been
Member, Society of
performed for clients ranging from private and public commercial
Broadcast Engineers (SBE)
ventures to all levels of governments from cities to the federal
Member and Certified
government. He has provided expert testimony in land use hearings and
Professional'. Broadcast
law suits involvingtelecommunications engineering.
Engineer (CBPE)
Amateur Radio License -
Representative pr�jets include:
K7SSL
...� .. _
FCC Genera!
Radiotelephone Operator
■ Performed topography analysis, system design, path loss
License
calculations for high -reliability microwave links for microwave
radio communications systems for Washington State Patrol, Central Kitsap School
District, U.S. Navy, Naval, city of Kent, Wyoming State Public TV, and others.
■ Project Design Engineer for medium wave antenna projects in San Jose, CA, McCall, ID,
San Mateo and Oakland CA, Blaine, Everett, and Seattle, WA, and others.
■ Measurement and Analysis of medium wave antenna systems bandwidth and antenna
load phase rotation for suitability for operation of In Band On Channel (IBOC) digital
modulation system, various stations nationwide, Corporation for Public Broadcasting.
■ Due diligence inspection of broadcast radio facilities in Bozeman and Billings, MT, Boise,
ID, Medford, OR, Reno, NV, Honolulu, HI, and others.
Hatfield & Dawson Consulting Engineers, LLC 8
Kalispell city Airport:
Modification or Relocation of Transmitting Antenna for KGEZ (AM)
October 2, 2006
THOMAS So GORT N, FtEa Senior Engineer
Hatfield & Dawson
Tom Gorton has over twenty years' experience in telecommunications Active Registration
engineering, with broad experience in broadcast, and cellular and Professional Electica[
microwaves sterns. He has conducted extensive analyses of antenna Engineer, WA, OR
y y
and electromagnetic propagation problems using manual and computer Professional Activities
techniques, calculation of non -ionizing radiation density at multiple -use Member, IEEE
communications sites for compliance with federal and local standards for
environmental impact, medium wave, VHF, UHF, and microwave propagation and antenna
system design and analysis. He has also been responsible for design, installation, supervision,
and testing of complex cellular infrastructures throughout Washington State, including cellular
base stations, microwave interconnect.
Re resentative proiects include:
■ Propagation measurements for King county Wastewater Treatment Division.
■ Propagation studies and data analysis for radio systems for Sound Transit.
■ Rebuild of control system for Mw broadcast station facility, KZOK.
■ Design and FCC application for numerous AM and FM broadcast stations, land mobile
facilities.
■ Facility siting and land use analysis and litigation support, including Qwest cougar Mt.
Project.
Hatfield & Dawson consulting Engineers, LLC 9
Kalispell City Airport:
Modification or Relocation of Transmitting Antenna for KGEZ (AM)
October 2, 2006
KATZ New Antenna System sign
Clear Channel Communications ongoing
St. Louis, MO
Inspection, Analysis, Remedial Recommendations, Negotiations with I.D.O.T, Site Selection for
Replacement site, design of new antenna system, including all FCC applications KATZ (St. Louis)
New construction of a freeway interchange prompted the Illinois Department of Transportation
to threaten condemnation of the long-established KATZ antenna transmitter site, near East St.
Louis, Illinois. IDOT put forward a number of replacement sites, many of which were not
consistent with the requirement for an antenna system of the complexity required by KATZ.
The two most satisfactory of them were very thoroughly investigated, but each one eventually
identified as satisfactory was eventually withdrawn from consideration by IDOT for ownership
or environmental reasons. The single most satisfactory site reviewed was deemed by IDOT to
be unavailable since it is being converted to wetland. Each such attempt to continue the
dialogue with IDOT required a reeducation process, since it was difficult for them to understand
the complex requirement for a very high gain 8-element antenna system.
A new set of trial adjustment efforts was made in spring of 2003, and agreement was reached
for a new replacement site. H&D designed new antenna array. It is one of the most complex
directional antennas in the U.S, being an eight -element antenna system designed as an end -fire
two-by-four. H&D filed for and received the necessary construction permit from the FCC. The
array is currently awaiting construction.
KPO]
Clear channel Communications
Portland, OR
Project Engineer
Ben Dawson
Antenna System Diplexing
ongoing
Ben Dawson implemented a high priority site change for KPOJ, Portland, OR, because of the
threat of condemnation of the 620 kHz antenna site. He prepared the initial studies showing
that KPOJ (620 kHz) could operate from the KEx (1190 kHz) antenna array, and prepared
necessary FCC applications. After extensive negotiations the Port of Portland refused to renew
the lease for the antenna/transmitter site. Ben then determined that a site change to
commonly owned KEx's site was practical, and supervised the move, implementing temporary
facilities in less than the 30 days notice that had been given by the Port. He designed a fast -
track diplexing system for interim non-DA operation. He designed and supervised installation of
directional diplexing system for full power nighttime operation, and prepared the FCC
commissioning report. Ben performed further allocation studies, and determined that power
Hatfield & Dawson Consulting Engineers, LLC 10
Kalispell City Airport:
Modification or Relocation of Transmitting Antenna for KGEZ (AM)
October 2, 2006
increases for daytime and nighttime were feasible without any changes to existing tower
structures, and prepared the FCC applications, as well as the design of the modified diplexed
antenna system. We supervised the implementation of the system when the FCC granted the
necessary changes.
KIR l KGNW
Clear Channel Communications
Seattle, WA
Project Engineer
Ben Dawson
Antenna Design and Tune. -.up
March 2004
After KJR was purchased by clear channel, H&D was engaged to implement a plan to diplex its
operation with KGNW at a site on Vashon Island, which had also been designed and
implemented for KGNW by H&D under Jim Hatfield's direction. We performed all the necessary
measurements of the existing system to allow accurate design of the new feed and filter
system, and supervised the preparation of specifications for the equipment vendor. When
KGNW's consultant suggested equipment modifications, he reviewed therm for desirability, and
when the equipment was installed, supervised clear Channel's staff in the installation and
performed the tune-up. We supervised the Meld measurement process and prepared the
license application.
H&D prepared the FCC applications on a very short timetable, to allow "grandfathering" of the
original allocation conditions, and the permits were granted within a few months. Paul Leonard
and Steve Lockwood then prepared designs for the feed system and filtering design. Because
Vashon Island is the site of seven AM stations, six of them operating at 50 kW, the filtering
system was relatively elaborate. After all land use permits were obtained and some
modifications of design were negotiated with the original user of the site, KGNW, Jim Hatfield
supervised tune-up and the performance verification "proof of performance" measurements for
FCC licensing. Ben Dawson provided additional analysis and recommendations for modest
modifications of the filtering system installation to meet the stringent FCC emission mask
requirements.
Project Engineers
.aim Hatfield
Stephen Lockwood
Paul Leonard
Ben Dawson
Hatfield & Dawson consulting Engineers, LLC 11
Kalispell city Airport:
Modification or Relocation of Transmitting Antenna for KGEZ (AM)
October 2, 2006
M3 Poorerincrease and site Relocation
CBS Radio stations, Inc November 1 t�b�r 002
..:.........:.:......:...::...... . .
Ffi env, CA
The increasing urban development of medium and large cities has increased the attenuation of
medium wave signals, and modern building structures frequently exhibit high attenuation
resulting in poor signal in interior spaces. Increasing urban electrical noise levels make this
problem even worse, particularly at the lower end of the MW band. KMJ, Fresno historically
employed a 138-degree tall antenna from a rural site some 20 miles from Fresno's downtown
area. Because of its low frequency operation (580 kHz) this produced excellent regional
coverage, but suffered from increasingly poor urban coverage. Hatfield & Dawson were asked
to investigate this situation and recommend possible solutions. We determined that the
existing site was not well located for a power increase, but that sites south and east of the
Fresno urban area were suitable. After investigation of several candidate sites and an analysis
of preliminary antenna designs by the KMJ engineering staff and Ben Dawson, a location south
and east of Fresno was selected.
Hatfield & Dawson prepared the FCC application for the construction permit and assisted the
KMJ staff in obtaining local land use permits and FAA clearance. H&D employed moment
method and advanced circuit analysis techniques to provide design for the feed system. As
soon as the antenna towers were installed and the ground system completed, the KMJ staff
made extensive measurements of the as -built impedance conditions, which allowed us to make
the necessary slight modifications to the feed system initial adjustment conditions.
The antenna system has now been in operation for over four years and provides superior
electrical performance and coverage. The complete project was performed under budget.
Project Engineer
Ben Dawson
Hatfield & Dawson Consulting Engineers, LLC 12
Kalispell City Airport:
Modification or Relocation of Transmitting Antenna for KGEZ (AM)
October 2, 2006
The qualifications of H&D's principal engineers are succinctly shown by their comprehensive
papers and publications on antenna, propagation, and non -ionizing electromagnetic radiation
C'RadHaz1 matters:
"Short Range Skywave Field Strengths from Tail AM Broadcast Towers" by H. Anderson
and David Pinion, IEEE Transactions on Broadcasting, V. BC-32, No. 3, September 1986.
"A comparison of the Fields of a Medium Wave Directional Antenna as Calculated by the
FCC Method and the Numerical Electromagnetic code" by James B. Hatfield and Paul W.
Leonard, presented at the March 1987 conference of the Applied Computational
Electromagnetics Society, at the Naval Postgraduate School, Monterey, CA.
"Sharing AM Transmitter Sites by Diplexing Antenna Systems" by Benj. F. Dawson III,
presented at the 1987 Engineering conference of the National Association of Broadcasters,
Dallas, TX.
"Numerical Electromagnetic Code Analysis of AM Directional Antenna Nulls and the
Proximity Effect" by James B. Hatfield, presented at the September 1987 Broadcast Symposium
of the Broadcast Technology Society of the IEEE, Washington, D.C.
"Relationships between Base Drives and Fields in Broadcast Medium Wave Directional
Antennas" by James B. Hatfield, presented at the March, 1988 conference of the Applied
Computational Electromagnetics Society, at the Naval Postgraduate School, Monterey, CA.
"Analysis of AM Directional Arrays Using Method of Moments" by James B. Hatfield,
presented at the April, 1988 Engineering conference of the National Association of
Broadcasters, Las Vegas, NV.
"Verifying the Relationships between AM Broadcast Fields and Tower Currents" by
James B. Hatfield, presented at the March, 1989 Conference of the Applied Computational
Electromagnetics Society, at the Naval Postgraduate School, Monterey, CA.
"Relative Tower Currents and Fields in an AM Directional Array" by James B Hatfield.
IEEE Transactions on Broadcasting, vol. 35, No. 2, June 1989.
"Analysis of a Sectionalized Tower as an Element in a Medium Wave Phased Array Using
the Method of Moments" by Benj. F. Dawson. IEEE Transactions on Broadcasting, vol. 35, No.
2, June 1989.
"Using MININEC to Relate Tower currents to Fields in an AM Directional Array" by James
B. Hatfield, presented at the September, 1989 Broadcast Symposium of the Broadcast
Technology Society of the IEEE, Washington, D. Coo
T
Hatfield & Dawson Consulting Engineers, LLC 13
Kalispell City Airport:
Modification or Relocation of Transmitting Antenna for KGEZ (AM)
October 2, 2006
"Improved Night Interference Protection" by James B. Hatfield, presented at the March
1990 Sixth Annual Conference of the Applied Computational Electromagnetics Society, at the
Naval Postgraduate School, Monterey, CA.
"A Modern Method of Predicting AM Tower Vertical Radiation" by James B. Hatfield,
presented at the September 1990 Broadcast Symposium of the Broadcast Technology Society of
the IEEE Washington, D.C.
"Modern Analysis Methods for Medium Wave Antenna Design" by Benjamin F. Dawson
III, presented at the International Broadcasting Convention - 1990, of the IEE(UK), Brighton,
U.K., September, 1990.
"Reciprocity and Moment Methods Applied to Predicting Radiated Emissions" by James
B. Hatfield, presented at the March 1991 9th International Zurich Symposium on
Electromagnetic Compatibility, Zurich, Switzerland.
"A Study of AM Tower Base Impedance," by James B. Hatfield, presented at the
September 1992 Broadcast Symposium of the Broadcast Technology Society of the IEEE,
Washington, DC.
"Nearly Seven Years of Success Using MININEC for Analysis of Standard Broadcast
Medium (Nave AM Directional Antennas," by James B. Hatfield, presented at ACES Symposium,,
March 1994.
"Problems with Moment Method Modeling of AM Arrays," by Jaynes B. Hatfield,
presented at 44th Annual Broadcast Technology Symposium, September 1994.
"Cellular Towers: Exposure Levels and Public Health," by James B. Hatfield, EMF Health
Report, vol.3, No.2, March/April 1995,
"Protection of Personnel Against Radiofrequency Electromagnetic Radiation," By James
B. Hatfield, presented at U.S. Air Force School of Aerospace Medicine, at Brooks Air Force Base,
Tx, May 1995.
"New Developments in Moment Method Analysis of Broadcast Antennas," by Dr. Richard
Adler and James B. Hatfield, presented at 45th Annual IEEE Broadcast Technology Symposium,
September 21,1995,
"Application of MININEC Broadcast Professional for Windows to AM Standard Broadcast
Arrays," by James B. Hatfield, presented at Annual Meeting of The Association of Federal
Communications Consulting Engineers, May 1996, San Francisco, CA.
"Induced and Contact Currents (ICC) at ICC Workshop," by James B. Hatfield, presented
at Brooks Air Force Base, Tx, May 21-23, 1996.
Hatfield & Dawson Consulting Engineers, LLC 14
Kalispell city Airport:
Modification or Relocation of Transmitting Antenna for KGEZ (AM)
October 2, 2006
"Computer Analysis of Antenna Systems," by James B. Hatfield, chapter 88, pp.1353 -
1367, of The Electronics Handbook, CRC Press Inc. 1996.
"Computer Simulation of AM Radio Antenna Systems," chapter 4.10 of "NAB Engineering
Handbook," 9th Edition, by James B. Hatfield, NAB, 1999.
"Isolation Requirements in Diplexed MF Antenna Systems" by Benj. F. Dawson III, Radio
World magazine, 2005.
"Computer Models of Kabul, Afghanistan Medium -Wave Antennas" by Paul W. Leonard,
submitted March, 2004 and in review for publication in IEEE Transactions on Broadcasting,
"Revisiting Medium Wave Ground System Requirements" by Benj. F. Dawson and
Stephen S. Lockwood, 2006 Broadcast Symposium of the Broadcast Technology Society of the
IEEE, Washington D.C.
Hatfield & Dawson Consulting Engineers, LLC is
Kalispell City Airport:
Modification or Relocation of Transmitting Antenna for KGEZ (AM)
October 2, 2006
Ap,.Pendix C:
PqPmtsai Relocation Sites
The following antenna structures and AM stations include all FCC records within 25 kilometers
of the KGEZ antenna site. They show the potential universe of passible existing facility
relocation sites.
Hatfield & Dawson Consulting Engineers, LLC 16
4,SR Registration Search Results http:llwireless2.fcc.govIUl.sApp/AsrSearcb/asrResults jsp;JSESSION
FCC Home I Search I updates I E-Filing I Initiatives j For Consumers j Find People
Antenna Structure Registration
FCC > WTB > ASR Online .Systems > ASR Search
ASR Registration Search
Registration Search Results
ON New Search Refine Search Printab guery Download
.*4 Map Result1s)
Displayed Results
Matches 1-10 (of 36)
1 2 3 4 Next: 11-20>>]
Specified Search
Latitude='48-09-40 N', Longitude='114-16-51 W",, Radius=25 Kilometers
Display: Basic View
On-
ifyly6«=
FCC Site Ma
91 acavANcEo sU&c14
91 HELP
= Pending Application(s)
Overall
Height
Above
Registration File Structure Ground
Number status Number Owner Name Latitude/Longitude City/State (AGL)
1 1000284 Constructed A0000364 SKYLINE 48-09-35.0N KALISPELL, 99.0
BROADCASTERS 114-17-08.OW MT
INC DBA = KGEZ
2
1000285
Constructed
A0000365
SKYLINE
48-09--40.ON
KALISPELL,
99.0
BROADCASTERS
114-16-55.0W
MT
INC DBA = KGEZ
3
1000719
Constructed
A0319097
Bresnan
48-11-44.0N
KALISPELL,
24.4
Communications,
114-18-38.0W
MT
LLC
4
1000744
Terminated
A0000900
PACIFICORP
48-12--47.ON
KALISPELL,
22.9
PACIFIC POWER &
114-19-53.0W
MT
LIGHT
5
1000780
Constructed
A0000940
EAGLE
48-00-48.0N
LAKESIDE,
73.1
COMMUNICATIONS
114-21-58.0W
MT
6
100088.8
Constructed
A0001056
KOFI INC
48-11-52.ON
KALISPELL,
88.0
114-15-11.OW
MT
7
1000889
Constructed
A0001057
KOFI INC
48-11-52.0N
KALISPELL!
139.9
114-15-06.0W
MT
8
1000890
Constructed
A0001058
KOFI INC
48-05-39.0N
SOMERS,
91.0
114-16-14.0W
MT
9
1003762
Constructed
A0475058
CenturyTel of
48-17-27.0N
KALISPELL,
12.2
Montana,, Inc.
114-17-34.oW
MT
10
1003779
Constructed
A0347478
Gold Creep
48-04-07.0N
BIG FORK,
45.7
Cellular of
114-02-23.OW
MT
Montana Limited
Partnership
9/2 6/2006 9: 15 AP
n SR Registration Search Results
http :1lwireless2. fcc.gov MsApp/AsrSearcb/asrResults j sp? searchTyp
ASR Registration Search
Registration Search Results ADvaHeEcscN
New Search E� Refine Search PrintabQuery Download 91 HELP
+ Man Result(s)
Displayed Results
Matches 11-20 (of 36) = Pending Application(s)
[.<< Previous: 1-101 1 2 3 4 rNext: 21-30>>]
5pecif led Search
Latitude='48-09-40 N", Longitude='114-16-51 W', Radius=25 Kilometers
Display: Basic View
Overall
Height
Above
Registration
File
Structure
Ground
Number
Status
Number
owner Name
Latitude/Longitude City/State
(AGL)
11
1003780
Constructed
A0347479
Gold Creek
48-22-25.ON
COLUMBIA
28.7
Cellular of
114-10-54.0W
FALLS, MT
Montana
Limited
Partnership
12
1004480
Constructed
A0005285
WEESE, RAE
48-10-34.0N
KALISPELL,
43.0
SHIRLEEN DBA
114- 20-56.OW
MT
WEESE
ENTERPRISES
13
1004621
Constructed
A0005466
KALISPELL,
48-12-46.0N
KALISPELL,
47.8
CITY OF
114-19-17.0W
MT
14
1012456
Constructed
A0464405
WWC Holding
48-04-05.0N
Big Fork,
35.3
Co., Inc.
114-02-20.0W
MT
15
1014770
Constructed
A0464423
WWC Holding
48-10-32.9N
Kalispell,
44.5
Co., Inc.
114-21-01.5W
MT
1E
1023310
Constructed
A0027802
MONTANA
48-12-28.0N
KALISPELL,
24.0
POWER
1.14-19--56.OW
MT
COMPANY
17
1051480
Constructed
A0464542
WWC Holding
48-22-21.9N
Columbia
35.4
Co., Inc.
114-12-12.5W
Falls, MT
18
1200859
Constructed
A0464567
WWC Holding
48-12-57.5N
Kalispell,
32.9
Co., Inc.
114-18-26.6W
MT
19
1205018
Constructed
A0152263
Plum Creek
48-11-45.7N
Kalispell,
18.7
Marketing Inc.
114-22-29.3W
MT
9/26/2006 9:15 AID
n SR Registration Search Results http:llwireless2.fcc.gov/MsApp/AsrSearch/asrResu.lts.jsp?searchTyp
20 1205418 Granted A0101508 Lake County 48-04-02.8N Bigferk, MT 9A
114-02-24.4W
Matches 11-20 (of 36)
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FCC I Wireless I lJLS I CORES
Federal Communications Commission
445 12th Street SW
Washington, DC 20554
H� I Tech Srv�port
Phone: 1-888-CALL-FCC (1-888-225-5322)
M: 1-888-TELL-FCC (1-888-835-5322)
E-mail: fcci n,fo2fcc.gov
9/2612006 9:15 Al
kSR Registration Search Results
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ASR Registration Search
Registration Search Results ADYANCEDSEARCH
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+,Map Result(s)
Displayed Results
Matches 21-30 (of 36) Pending Application(s)
[< < Previous: 11-20] 12 3 4 [Next: 31-36> > ]
Specified Search
Latitude='48-09-40 N% Longitude ='114-16-51 W', Radius=2S milometers
0-
Display: Basic View � V• ::rFry
s
s�
Overall
Height
Above
Registration
File
Structure
Ground
Number
Status
Number
owner Name
Latitude/ Longitude City/State
[AGL]
21
1206166
Constructed
A0103152
KALISPELL, CITY
48-13-16.8N
KALISPELL,
15.2
OF -- FIRE
114-18-53.4W
MT
DEPARTMENT
22
1206885
Constructed
A0154866
City of Kalispell
48-13-17.0N
Kalispell,
15.2
114-18--53.0W
MT
23
1215127
Dismantled
A0142187
WWC Holding
48w-03-23.8N
Bigfork, MT
48.8
Co., Inc.
114-03-44.4W
24
1217776
Constructed
A0464635
WWC Holding
48-03-23.8N
BigFork,
33.5
Co., Inc.
114-03-44.4W
MT
25
1225065
Cancelled
A0422229
Mesa
48--15-18.5N
Kallispell,
60.3
Communications
114-18-00.3W
MT
Group LLC
26
1226545
Cancelled
A0330942
Mesa
48-20-36.0N
Whitefish,
83.3
Communications
114-20-14.2W
MT
Group LLC
27
1233670
Constructed
A0266256
CenturyTel of
48-11-52.8N
Kalispell,
21.9
Montana, Inc.
114-18-40.5W
MT
28
1235181
Granted
A0276699
TriStar
48-11-58.8N
Kalispell,
59.5
Communications,
114-19-06.4W
MT
LLC
29
1237778
Constructed
A0337542
TriStar
48-11--58.8N
Kalispell,
54.8
Communications,
114-19-06.4W
MT
LLC
30
1243936
Constructed
A0485029
TriStar
48-12-58.7N
Kalispell,,
41.0
Communications
114-16-16.9W
MT
9/26/2006 9:I5 A]
43R Registration Search Results
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ASR Registration Search
Registration Search Results DANCED SEARCH
New Search Refine Search Printable Pa e Query Download HELP
-
Ma Result(s)
Displayed Results
Matches 31-36 (of 36) Pending Application(s)
[ < < Previous: 21-30] l 3 4
Specified Search
Latitude='48-09-40 N', Longitude ='114-1F-51 W, Radius =25 Milometers
Display: Basic View MO.
Overall
Height
Above
Registration
File
Structure
Ground
Number
Status
Number
Owner Name
Latitude/ Longitude City/State
(AGL)
31
1245269
Granted
A0396396
Gold Creek
48-17-36.7N
Kalispell,
29.9
Cellular of
114-24--22.7W
MT
Montana
Limited
Partnership
32
1247832
Granted
A0464699
WWC Holding
48-18-14.1N
Kalispell,
38.1
,Co., Inc.
114-19--31.7W
MT
33
1248440
Granted
A0464711
WWC Holding
48- 17-41.2N
Columbia
35.1
Co,, Inc.
1.14-Y14-57.5W
Falls, MT
34
1250371
Constructed
A0514776
Skylink
48-09-57.ON
Kalispell,
30.0
Digital LLC
114-19-52.OW
MT
35
1252546
Granted
A0495077
Weese
48-04-07.ON
Bigfork, MT
50.6
Enterprises
114-92-23.OW
36
1253697
Granted
A0506746
Swan Hill TV
48-04--04.3N
Bigfork, MT
32.9
District
114-02-19.3W
Matches 31-36 (of 36)
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Systems
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9/26/2006 9: I6 Al
IHDAM . EXE Copyright 2003, Hatfield & Dawson, LLC Version 4.53
SEARCH PARAMETERS AM Database Date: 20060907
Frequency Range: 530 to 1700 kHz
Latitude: N 48--09-40
Longitude: W 114-16-51
Search Radius: 25 km
(Call
,Status
City
St Co FCC File No.
Freq
Mode
Power(kW)
Hrs Cls
Latitude
Longitude
Bearing
deg --True
Distance
kilometers
KGEZ
KALISPELL
600
5.000
N
48-09-40
0.0
0.00
LIC
MT US BL1981091SAD
DA2
DAY B
W
114-16-51
',KGEZ
KALISPELL
600
1.000
N
48-09--40
0.0
0.00
LIC
MT US BL 19 810 915AD
DA2
NITE B
W
114 -1. 6 - 51
NEW
COLUMBIA FALLS
840
1.000
N
48-22-00
17.5
23.96
MT US
DAN
NITS B
W
114--11-00
NEW
COLUMBIA FALLS
840
10.000
N
48-22-00
1.7.5
23.96
MT US
DAN
DAY B
W
114 -11-- 0 0
KOFI
KALISPELL
1180
50.000
N
48-11-52
28.6
4.64
LIC
MT US BL19820804A.L
DAN
DAY B
W
114-15-03
KOFI
KALISPELL
1180
10.000
N
48-11-W52
28.6
4.64
LIC
MT US BL19820804AL
DAN
NITE B
W
114 - 15-03
�KQJZ
KALISPELL
1340
1.000
N
48-W11-59
327.7
5.08
C P
MT US BNP 0 0 410 2 9AD I
ND 2
DAY C
W
114 --19 -- 0 3
r
JKQJZ
KALISPELL
1340
0.670
N
48-11-59
327.7
5.08
CP
MT US BNP0041029ADI
ND2
NITE C
W
114-19-03
.NEW
EVERGREEN
1400
0.250
N
4 8 -14 -- 2 0
43.2
11.86
AP P
MT US BN P 0 0 4 013 0 BMQ
ND 2
DAY C
W
11.4 -10 W-1 6