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Each client has its own
unique set of circumstances and we are prepared to address each one. Examples
of some of the systems we have designed include:
St. Mary's Hospital, Grand Junction, CO
(2008)
St. Mary's Hospital was building an
addition on to their main section, decided to put a distributed
amplifier system (DAS) in the new building and was very concerned about
radiation into their medical electrical equipment. HARTECH performed a
study of all internal and external radiofrequency transmissions and
calculated the distance they should keep transmitters away from medical
instruments to protect them from interference and inaccurate readings.
Centura Health
(and Hammes Company) (2007)
HARTECH was engaged
by Centura Health to evaluate the RF
interference concerns for a new hospital to be constructed at the Denver
Federal Center in Lakewood, CO, where a number of high power federal
radio stations are collocated. We have generated calculations and information on potential of interference
within the hospital. A final report was delivered in July, 2007.
City of
Broomfield, CO (2006)
HARTECH performed
a microwave study for Broomfield's water and wastewater SCADA radio
control systems. We performed field work including review of equipment,
coaxial lines and antennas; took measurements and made path calculations
for some thirty microwave radio paths. In addition we integrated the
path profiles and reliability calculations for several future remote
pump sites into our report. We designed a new 900 MHz radio systems
using a mountain repeater with extremely high radio/path reliability.
AM West Control,
Inc. (2005)
Performed microwave
profiling for as number of different water and wastewater SCADA systems
as required by AM West.
Vail Resorts
Management Company (2004)
Vail engaged HATRTECH
to redesign their two-way radio system for their Vail and Beaver Creek
ski areas in time for major international downhill ski races. We
performed coverage calculations and found a new mountain base radio site
which covered both Ski areas as well as the concrete/steel Beavercreek
Village area. We generated specifications for the new radio system, made
sure there were several equipment and service sources near the ski areas
and aided the company with the evaluation of proposals. The
implementation was completed as required and we understand met the
area's needs
for the downhill competition and for their mountain radio communications
thereafter.
National Law
Enforcement and Corrections Technology Center (NLECTC) (2004)
On a technical
assistance contract we reviewed documents for the State of Wyoming's
radio systems: "Wyoming Statewide Public Safety Requests for
Proposals". We discussed our comments with state officials
and made suggestions as well as raised a number of questions to the
NLECTC.
City of Denver, CO (2003)
HARTECH worked with the neighbors
in a residential area against the construction of a newly approved PCS site in the
Highland portion of the city. The applicant had not made the necessary studies of
alternative sites. We performed coverage calculations for some seven alternative
sites where the tower would most likely fit into the neighborhood and meet the
carrier's requirements. With our help, the Denver Board of Adjustment nullified
the permit and the PCS carrier was working with the neighborhood folks to pick an
acceptable site.
City of Glendale,
CO (2000)
HARTECH performed a
hazardous radiation studies for the city's radio systems at the City
Hall and on top of a hotel site on Colorado Blvd. We generated the
calculations and a report showing our work and certifying the city
met the FCC hazardous radiation requirements per FCC Standard OET
65.
Jefferson County, CO
(1998-2005)
HARTECH had a consulting contract
with Jeffco for over seven years to examine tower proposals and verify the coverage and
make human exposure calculations to prove the RF energy will meet the FCC
standard OET 65. Our
particular work has included examinations of four potential sites for HDTV transmission
suggested by broadcast companies' applications to cover the Denver metropolitan area. Two
of the four were approved by the Jeffco Board of Commissioners (later
withdrawn), Mount Morrison and Lookout
Mountain, with our input of calculations and testimony. We have also examined and verified
several cellular/PCS permit applications for the county and gave appropriate testimony at
both the Planning Commission and the Board of County Commissioners. In
2007, the Colorado U.S. Senators added a segment on a bill requiring
that Lookout Mountain be used for the DTV stations to cover the Denver
area.
We also worked with the Jeffco
Zoning and Planning Department to upgrade their Telecommunication Land Use Plan (TLUP) and
their county resolution for permit issuance. This was being accomplished by attending
"stakeholders" meetings and integrating their concerns into the plan. It is
hoped the process will streamline the administrative permit approvals and simplify the
work of the Planning Commission as well as the Board of County Commissioners.
Garfield County, CO (2000)
In 2000, Garfield County voted a special taxing district and constructed a new public
safety communications center in Rifle, Colorado to conduct all radio communications for
the county including the Towns of Glenwood Springs, Rifle, New Castle, Silt and Parachute
as well as all Garfield County communications. A 40,000 square foot facility was
constructed. HARTECH generated 150 MHz mobile and handheld radio coverage analyses
for 13 potential repeater sites and did microwave path profiles for 17 paths
within the county.
Tri-State Generation and Transmission Association, Inc.
Over the past several years,
HARTECH has generated over 100 contour overlays for mobile coverage in several
states in the 450 and 800 MHz radio bands. Our feedback from Tri-State is that
the analyses have been very accurate. Tri-State engineers cut the transparencies
out and glued them onto1:500K USGS state maps so they can see areas which are not
covered and drop in additional repeaters as necessary. James Hart wrote an article
describing the process in the July, 1999 issue of Radio Resource Magazine:
"Tri-State Tackles Coverage in Challenging Terrain", pp. 21-24., which describes
Tri-State's unique approach.
National Law Enforcement and
Corrections Technology Center (NLECTC)
James Hart coauthored a book for
the National Law Enforcement and Corrections Technology Center (NLECTC) group of
the U.S. Department of Justice for public safety communications center directors:
"Understanding Wireless Communications in Public Safety, a Guidebook to Technology,
Issues, Planning and Management". Hart wrote all the technical portions of this
handbook. (The book may be downloaded from our homepage or at the NLECTC website - www.nlectc.org -
here. (The
file name is wireless2003.pdf.)
Arapahoe County, CO
HARTECH performed a study and certified
the radio coverage for Arapahoe County in about 1997. In 2000, we performed a ground
radiation analysis study per FCC OET Bulletin 65 for some eight radio sites and made
recommendations to certify the sites were compliant with the ANSI/FCC standards.
Township of St. Clair, PA
HARTECH evaluated two sites
and radio systems for township communications by first performing a theoretical
propagation study and making comparison measurements to prove the improved
coverage of one system over another in extremely hilly terrain.
City of Arvada, CO (1997-2002)
HARTECH had an ongoing consulting contract with the City or Arvada. We have examined
and verified applications for cellular/PCS radio site permits and have testified before
the Planning Commission and the City Council regarding technical and aesthetic concerns.
HARTECH performed a
propagation study for a SCADA system for the Arvada water system. We continue to
advise the city in the area of wireless radio installations.
In 2001 HARTECH presented technical comments for a proposal regarding
the removal of a 219 foot high "gas processing" tower and the
installation of an 80 foot high broadcast tower at a northern Arvada
mountain site.
In 2002 HARTECH performed field work and evaluation for a T- Mobile
tower to show the tower met the FCC hazardous radiation standards.
Over the early 2000 decade we reviewed many cell and two-way radio
proposals provided to the city to make sure they met the radio and site
regulations VHF and UHF frequencies.
City of Thornton, CO
HARTECH worked under a
subcontract to design a high capacity 18 GHz digital radio system for the City
of Thornton to connect their city telephone systems and for local area network
communications.
City of Dodge City
HARTECH was retained by this
Kansas city to overcome numerous problems with the community's radio systems.
The police and fire departments complained of emergency response difficulties.
Public works reported excessive waiting in order to use busy channels.
Interference problems and coverage difficulties compounded the issues, making
further expansion requirements seem impossible. HARTECH performed an in-depth
needs assessment and based on our findings, we obtained coordination of
additional frequencies, wrote FCC applications and generated specifications for
a new radio system. HARTECH assisted Dodge City in evaluating proposals and
selecting a supplier. The installed system has met and is now exceeding city
expectations. We also designed and witnessed the acceptance of a SCADA system
for the city with some 45 RTU's for the sensing and control of the city's water
and sewer systems.
Colorado Interstate Gas
Company
HARTECH worked with this gas
distribution company to perform preliminary planning for microwave and two-way
radio stations along a newly planned radio system connecting fourteen mountain
top sites. Using our analyses, Colorado Interstate Gas determined the final
microwave routing. HARTECH was also retained to review the system specifications
and offer input to finalize the company's request for equipment from suppliers.
KN Energy
HARTECH advised KN Energy on
the design of some of their two-way radio and microwave radio systems in the
states of Colorado, Kansas, Nebraska and Texas.
Lockheed Martin (Martin
Marietta)
HARTECH designed a 672
channel, T3 (45 Mbps) digital microwave communication system for Lockheed Martin
to communicate from their campus to some far-flung entities in the Denver
Metropolitan area including their Littleton, Inverness and Denver centers.
Public Service Company of
Colorado
HARTECH designed a microwave
link for this large power utility company, enabling the telecommunications
facilities to be shared with another utility company. The system is a 6 GHz, 600
channel analog microwave link.
Saco River Telegraph and
Telephone Company (Maine)
HARTECH was selected by this
New England telephone company to design a very high density microwave system
running between Boston, Massachusetts and Portland, Maine. Our experts performed
the microwave layout study, generated system specifications and assisted in
evaluating proposals and selecting a vendor. This 2,016 channel, 135 mbps system
has been overbuilt up to over 14,000 channels and has operated successfully for
many years.
Southeast Michigan Gas
Company
HARTECH performed a series of
coverage studies for Southeast Michigan Gas to determine which of five potential
sites would give optimized coverage for their wireless radio systems using our
unique propagation programs.
University of Colorado
(Denver, CO)
HARTECH gave technical advice
and prepared the informal FCC application required for operation of a Ku band
satellite earth station in a network involving the University's Health and
Sciences Center. The station was licensed and has been operating since 1989.
Launching Clients into the 21st
Century with Sophisticated Broadcast Engineering
Much of HARTECH's broadcast
engineering work involves low power television (LPTV) system design work.
Station studies are performed to determine available channels in a given
geographical area in accordance with the FCC rules.
New York Yankees
HARTECH performed a study for
the New York Yankees to ascertain whether a UHF channel would have the coverage
that their VHF channel had. We performed theoretical propagation studies and
then made measurements and recorded video/audio clips at some 100 points around
New York City and adjoining states to demonstrate our results.
KCNC (CBS), Denver
HARTECH performed a microwave
study to determine potential microwave radio link blockage between their studio
and transmitting sites.
Johnson Space Center
HARTECH generated a channel
search for a low power television station which would enable this government
agency to disseminate flight and training information to base
suppliers and their families.
Mesa County (Grand
Junction, Colorado)
HARTECH developed the layout
and specifications for a five channel county television translator system in
western Colorado. This was installed in 1980 and continues to operate
efficiently providing national network programming and some independent channels
to its residents.
KPRN-FM (Grand Junction,
Colorado)
HARTECH performed the
required engineering for the license application for this high powered FM
broadcast station enabling it to provide National Public Radio programming to
the western slope of Colorado. The station has been on-the-air since 1984.
Palmer Communications
(Palm Desert, California)
HARTECH made electric field
measurements in accordance with FCC requirements for a Palmer-owned television
station in Palm Desert, California.
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