FEATURE ARTICLE
Auxiliary Broadcast Microwave Implementation
Six Steps to Success
by Timothy P. Hardy, Vice President, Engineering
and Greg Macey, Senior Manager, Spectrum Management Solutions
Introduction
Two years ago, the FCC enacted a new ruling requiring
users in the Broadcast Auxiliary Service (BAS) microwave bands to formally
prior coordinate their proposed systems before submitting an application
for license. This new ruling introduced additional design considerations,
frequency analysis and coordination procedures that were previously unfamiliar
to many broadcasters.
Harnessing our years of experience working with the FCC, performing frequency
analyses and coordinating thousands of microwave paths, Comsearch has
laid out blueprints for our "Six Steps to Success"—specifically
designed for broadcasters working through this process. The following
includes descriptions of the six steps, tips to navigate through some
of the steps, and questions to ask at certain stages. Let's dig a little
deeper into this process and examine what goes on "behind the scenes."
STEP
1:
GETTING STARTED
Frequency coordination must occur when there is a requirement for microwave
service, which cannot be filled using leased lines or fiber. The requests
are usually for Studio-to-Transmitter (STL), Transmitter-to-Studio (TSL)
or Inter City Relay links. Once you identify the requirement, then begin
by designing the microwave path.
STEP 2:
DESIGN YOUR PATH
To successfully design a microwave path, there are two variables to consider;
what equipment will be used, and the current microwave and physical environment.
The radio, antenna and cabling/waveguide selected should adhere to FCC
standards for the type of path and the location of the path. Path clearance
and path reliability studies ensure a proper signal is received throughout
all seasons of the year.
Begin by determining if the path has line of sight and proper Fresnel
zone clearance. A 1-arc second terrain database, in conjunction with path
design software is a good place to start. Using the path design software,
optimize the centerlines to achieve proper clearance (typically K factor
= 1 and 0.6 first Fresnel zone). Follow this up with a physical path survey
using accurate GPS to confirm the coordinate accuracy. The path survey
should ensure foliage and/or man-made objects do not obstruct the path.
Proper allowance for foliage growth should also be made.
Tips On Path Design
- Accurate coordinates are a must to ensure
path clearance and accurate frequency analysis. Use various data
for verification including, 1 arc second digitized terrain, 7.5' topo
maps, GPS and any existing Antenna Structure
Registration (ASR) or station records as a refer- ence. Coordinate precision
should be 1 second or less. Site coordinates should be referenced in
the NAD 83 datum. The FCC's CDBS data for broadcast stations still refers
to the NAD27 datum.
- Optimize the antenna centerlines.
Insufficient path clearance can result in a loss of signal while excessive
clearance may introduce harmful signal canceling reflections.
- Be careful not to "over" or "under" design
the path. "Under" designed paths will be more susceptible to
path outage due to fading. "Over" designed paths can result in oversaturation
and can also limit frequency reuse within a given market. As a rule
of thumb, modern digital systems are typically designed with a predicted
yearly outage of 160 seconds or 99.9995% reliability. To achieve this
reliability, an average length microwave path in an average propagation
climate usually requires 35-40 dB of fade depth (margin) from a received
signal level (RSL) to radio threshold. See Table 1 for Effective Isotropic
Radiated Power (EIRP) for the BAS bands. Note that paths shorter than
17 km for the TV BAS bands are further EIRP limited according to FCC
rule section 74.644.
| Service |
Frequency
Band (MHz) |
Maximum
Allowable
EIRP (dBW) |
| Aural BAS |
944 – 952 |
40 |
| Fixed TV BAS |
1990 – 2110; 2450 - 2483.5 |
45 |
| Mobile TV BAS |
1990 – 2110; 2450 - 2483.5 |
45 |
| CARS |
1990 – 2110 |
35 |
| |
13200 – 13250 |
55 |
Table 1: EIRP Limits
- Choose a radio certified for FCC domestic
use in accordance with Part 74 and Part 2. Frequency agile equipment
provides added flexibility in the event the equipment is relocated at
some future date.
- Choose antennas for the BAS bands in compliance
with 74.536 (Aural) and 74.641(TV). FCC rules for antennas in
the Aural bands can be ambiguous. The FCC calls for an antenna with
the "minimum beamwidth necessary, consistent with good engineering practice
to establish the link", but does not give defined numerical antenna
standards. The FCC will require a significant engineering exhibit justifying
antenna beamwidth greater than 24°. Yagi antennas would be subject
to this additional scrutiny. Most paraflectors and miniflectors may
not meet the 24° requirement for horizontal polarization (E plane).
Always double-check the beamwidth when specifying horizontal polarization
in the 950 MHz band. Consider using Standard A antennas in the TV BAS
bands (2, 7 & 13 GHz) as this will ultimately allow for greater
frequency reuse for future paths (possibly even your own).
- Account for fixed losses in the waveguide
or cabling and any associated connectors. These losses can be
significant, especially in the higher frequency bands. For example,
60 feet of EW132 waveguide at 13 GHz results in more than 3 dB of loss.
This results in more than half the power lost before it even makes it
to the antenna.
- Account for rain fade in bands above 10
GHz as part of the design. Good path design software should have
the Crane and ITU rain model for your market.
STEP 3:
COORDINATE YOUR PATH
First determine if the path requires a formal Part 101 coordination or
local coordination using Table 2 below:
| Frequency Band (MHz) |
Coordination
Procedure |
| |
Fixed |
Mobile |
| 944 – 952 |
101 |
|
| 1990 – 2210 |
Local* |
Local |
| 2450 – 2483.5 |
101 |
101/Local |
| 6425 – 6525 |
101 |
101 |
| 6875 – 7125 101 |
101 |
101/Local |
| 12700 – 13250 |
101 |
101/Local |
| 17700 – 19700 |
101 |
101 |
| * New requirement for certification that all potentially
affected co-channel and adjacent channel licensees and applicants
have been notified and are in agreement |
Table 2: Coordination Procedures by Band
If the proposed path only requires interfacing with the local area coordinator,
then the contact information is easily obtained from the Society of Broadcast
Engineers (SBE) at www.sbe.org.
If the proposed path requires a formal FCC Part 101 coordination, you
need to choose a qualified frequency coordinator. A listing of frequency
coordinators can be found on the FCC's web
site.
To find a reliable frequency coordinator who can address your particular
needs, find out the answers to the following questions:
- Does the frequency coordinator conduct a
detailed interference assessment of the microwave environment?
Do they use the actual antenna patterns and
radio specifications (including filters) and terrain shielding where
available? Some coordinators may simply
regurgitate the information you provide to them with little or no analysis
at all.
- What is the source of the frequency coordinator's
BAS data? Databases maintained for longer periods of time
using multiple sources of path verification are far more accurate than
the FCC data.
- What is the level of experience of the coordinator
who will be handling your frequency coordination request? Try
to choose a coordinator that has at least a few years of frequency coordination
experience. This person is more likely to be intimately in tune with
all of the nuances of the rules, how microwave radios work and what
differing levels of interference will mean to path performance. A seasoned
veteran of coordination is less likely to fail a path and will offer
possible solutions if it is necessary to fail a path.
- Will the Prior Coordination Notice (PCN)
be sent to the local area coordinator as a courtesy during the coordination
process? This is a good recommendation. Sending the PCN to
the local area coordinator allows for one more person to evaluate the
coordination and bring up any issues or concerns. The local SBE coordinators
usually have inside knowledge of paths that are not licensed properly,
not licensed at all or are no longer operating.
STEP 4:
PERFORM A DETAILED INTERFERENCE ANALYSIS
Interference Analysis is a process that selects frequency and polarizationusing
computer simulation of the proposed path against an existing database
of microwave paths. Metrics generally used to calculate potential interference
include the ratio of carrier signal level to interfering signal level
(C/I), also known as Desired to Undesired (D/U), or Interfering Power
Level (IPL).
For a given analysis, it is necessary to input all the critical information
comprising the path. This includes the detailed site coordinates and ground
elevation for both the transmitter and receiver, radio equipment make
model and transmitting power, antenna make model and breakpoint pattern
for all possible polarization scenarios, antenna centerline heights above
ground level and finally any system losses (cabling, connectors, branching
etc.).
Once this is complete, analyze the path against the environmental database.
First, cull all potentially affected paths within the pre-defined coordination
distance. Then perform C/I calculations using available antenna and radio
specifications. Finally, compare the calculated C/I to the C/I objective.
The case is thrown out if the objective is met. The case is retained for
further analysis by the coordinator if the objective is not met.
According to the NSMA report WG 3.87.001 titled "Primer on Frequency
Coordination Procedures", the specific effects of interference to a given
system depend on many factors including:
- The modulation characteristics of the desired and interfering signals
- The extent of channel overlap or frequency separation between the
two signals
- The relative difference in signal strengths of the two signals, or
in some situations, the relative level of interference signal with respect
to the normal noise level of the interfered with system
There may be little to no control over the first two factors affecting
interference, however, you can somewhat control the relative difference
in signal strengths to reach a desirable result. The coordinator has at
their disposal several tools to help mitigate potentially interfering
scenarios to achieve the end result of a clean, interference-free frequency
including:
- Maximize Frequency Separation. Radio
filtering offers the easiest way to clear potentially interfering cases.
- Cross-Polarize to an interfering signal.
20 to 40 dB of improvement can be achieved along the main beam of the
antenna simply by cross polarizing to an interfering signal. This level
of improvement may not be feasible if paraflector or miniflector antennas
are used.
- Use terrain data losses. Commonly
referred to as Over the Horizon Loss (OH Loss), this statistical loss
adapted from NBS Technical Note 101 and further refined by the NSMA,
gives predicted long-term and short-term loss values in accordance with
predefined terrain scenarios. These predicted terrain losses can be
used to adjust the calculated C/I margins.
- Choose antennas wisely. Antennas can
make or break a path especially in the 7 GHz and higher bands where
there are significant differences in antenna performance between the
most basic parabolic to the ultra high performance shrouded parabolic.
Front to Back ratios can be improved approximately 30 dB in the 7 GHz
band by changing from a standard to an Ultra High performance model.
Unfortunately, this same level of improvement is not possible with the
950 MHz Aural BAS antennas.
- Use local knowledge. Because the FCC
data elements are lacking for many systems and some systems are not
licensed at all, the frequency coordinator and BAS user should work
closely together to ensure that all known paths are considered.
- Tweak the power up or down to clear minor
cases. Hopefully, future BAS radios will be developed with Automatic
Power Control (ATPC) capability using Data Return Links to offer even
more flexibility.
- Consider man-made shielding. In urban
environments, interfering paths are often blocked by the buildings they
reside upon or by another building along the interference path. Building
shielding can account for 15 dB or more of loss.
- Consider natural shielding. Taking
into account any natural shielding such as forests can clear borderline
cases, but generally foliage is not used to clear cases with point-to-point
systems.
- Perform on-site monitoring or measurements.
Because there is a finite amount of spectrum, BAS coordinators sometimes
work together to see if paths, which might look questionable in a computer
simulation, may be able to coexist in the actual implementation. This
process enables users to take advantage of antenna pattern nulls. Extreme
caution should be exercised when clearing potential cases in this fashion.
Remember to be certain that your fade margin is fully protected. An
interference case that looks fine today could be seriously degrading
the hop’s fade margin, which would not be evident until the path
went into a deep fade.
- Choose alternate frequency bands or rerouting.
When all else fails…"Try, try again!"
A seasoned coordinator knows that a given frequency analysis is comprised
of 50% science, 40% skill and 10% innovation.
STEP 5:
SEND PCNs TO OTHER LICENSEES AND RESPOND TO INTERFERENCE
CONCERNS
Once the interference analysis phase of the project has been completed,
the FCC rules require the coordinator to forward a detailed prior coordination
notice to "all potentially affected users". TIA bulletin TSB10-F
defines the coordination area for bands below 15 GHz as a circular distance
of 125 miles and a keyhole distance of 250 miles (the keyhole is defined
for angles +/- 5 degrees of the antenna mainbeam). Prior coordination
is an iterative process involving both notification and response. All
recipients of the prior coordination notice have 30 days (this time-frame
can be shortened on a case-by-case basis) to analyze the proposal and
respond with any interference problems that they find. If potential interference
is noted, it is the initiating coordinator’s responsibility to resolve
it. If no response is sent to the initiating coordinator within the 30-day
period, they may assume that no interference problems exist and can proceed
with the FCC filing.
PCNs are valid for six months from the date of the notice. They can be
renewed for an additional six-month period, but the renewal must be made
prior to the end of the six-month cycle. FCC applications must be made
within six-months of the date on the last coordination notice for the
path or the FCC will return the applications as defective.1
STEP 6:
SUMBIT FCC LICENSE APPLICATIONS
FCC license applications must be submitted through the FCC’s web–based
Universal Licensing System (ULS). Many frequency coordinators and attorneys
provide this service. Web-based services such as ULS-Express are available
to allow batch filing of applications. This service auto-populates all
technical portions of the application – leaving only the administrative
data for the applicant to complete. The software ensures an exact match
between the coordinated data and the applied for or licensed data.
Once the application is submitted, you may be able to operate prior to
license grant using
"Conditional Authorization." This authorization is conditioned
upon the applicant meeting several requirements, including the successful
completion of frequency coordination. The FCC also added a new Section
74.25 to allow Conditional Authorization for BAS. The following additional
requirements apply:
All Broadcast Auxiliary Stations
- The station must have been previously studied and cleared by the FAA,
if applicable.
- The application filed has no waiver requests.
- The station does not lie in a Quiet Zone (FCC Part 1.924)
Aural and Television Broadcast Auxiliary Stations
- Applicable frequency coordination procedures have been successfully
completed and the filing matches the coordination.
- The station does not lie within an area requiring international coordination.2
Once the application is successfully granted, licensees have 18 months
to construct the system. When construction is completed, file FCC form
601, schedule K. This is known as the "Completion of Construction"
form or NT.
Looking Ahead
As time goes on, the FCC’s Auxiliary Broadcast database will improve.
This will help to further streamline the analysis and prior coordination
process. Identical coordination procedures have been successfully used
in the Common Carrier bands for over 34 years.
Aside from the data, one of the biggest challenges ahead is standardization
of interference criteria and assimilation of radio equipment filter data—particularly
in the Aural BAS bands. SBE launched a subcommittee to rectify this problem
in October of 2004. George Maier (Orion Broadcast Solutions) along with
several SBE members and frequency coordinators are working together to
make this happen.
Conclusion
Successful microwave implementation is a multi-step process requiring
planning and organization. Try to plan a project 4 – 6 months ahead
of time with the radio determination, path design and frequency analysis/coordination
completed. Next, order the radios, antennas and file your application.
The equipment can be ordered prior to completion of frequency coordination
to save approximately 30 days, but there is a slight risk that a problem
could occur in the prior coordination process that would require changes
to the selected frequency.
Following these six steps will save time and ensure that the proposed
path will be successfully coordinated, licensed and operate free from
unwanted interference.
CASE CORNER
U.S. Government Telecommunication Links
and Wind Energy Facilities (Wind in the Wireless)
by Lester E. Polisky
Comsearch Senior Principal Engineer
We have written in this space before about the blockage
threat posed by wind power turbines to microwave paths. Now we’re
finding the issue extends to U.S. Government telecommunication links as
well. Comsearch is working with the wind energy industry and the National
Telecommunications and Information Administration (NTIA) to develop a
solution to ensure that sensitive and critical Government telecom links
are not negatively impacted by wind power turbines.
A typical wind turbine may have a rotor diameter on the
order of 50 – 90 meters (164 – 295 ft), which means that the
height can extend to over 135 meters (443 ft) above ground. In addition,
wind turbines are usually clustered together in farms comprising up to
a hundred generators. This combination of numerous, tall, rotating structures
can cause several problems with point-to-point microwave paths. A picture
of a wind turbine farm is shown below in Figure 1.
Comsearch provides a service to the wind energy industry
by identifying the various commercial telecommunication links that may
pass through a proposed or existing wind energy facility. By taking the
coordinates and physical dimensions of the facility’s individual
wind turbines, Comsearch uses its telecommunication databases and its
proprietary Geo-PlannerTM software to identify the extent to which a wind
energy facility may cause blockage to telecommunication links.
We apply the Geo-Planner software to identify possible
Fresnel zone blockage. Blockage of any portion of the first Fresnel zone
will cause degradation to the microwave path. Figure 2 shows a two-dimensional
map overlay of the site with the wind turbines plotted to see if there
is a potential obstruction. The analysis results are provided to the wind
energy facility developer to decide whether to relocate or eliminate the
wind turbine(s) that obstruct the telecommunication link(s).
This technical service has been very successful in providing the wind
energy industry with the information that allows them to construct their
facilities without disrupting commercial telecommunication systems. This
is a voluntary obligation the wind energy industry has taken on because
they believe it’s in their best interest to be a good neighbor.
Recently, the issue has been raised by the wind energy
industry whether Comsearch could provide the same service for Government
telecommunication links. There is an added complication with these links
considering the technical data is maintained by the NTIA and is confidential.
Clearly, the NTIA does not want its communication links to be obstructed
by wind energy facilities, therefore if an easily-implemented coordination
process could be initiated between the wind energy developer and the NTIA,
it would provide a win-win solution.
Meetings with the NTIA and other federal agencies to discuss
the interference and coordination issue have been fruitful. There was
general agreement from the NTIA that Government telecommunication links
should also undergo the same type of analysis as commercial links. After
discussing several possible options, the NTIA indicated that it may be
possible to implement preventive measures to avoid potential service disruptions
while addressing the security concerns associated with Federal Government
systems.
REGULATORY
RAP
Spectrum Management News
MICROWAVE
FCC Report - The Truth about Cell
Phones and the National Do-Not-Call-Registry DOC-258164A1.pdf
International Telecommunication Services
– The FCC commits to mandatory electronic filing of applications for all
international telecommunications services. (Dkt No 04-226, FCC No. 05-91)
DOC-258479A1.pdf
FCC-05-91A1.pdf
FCC to Re-Examine Cable Ownership
Rules - The FCC adopted a 2nd FNPRM that examined the Commission's
cable horizontal and vertical ownership limits. The FCC will take a fresh
look at rules that will foster competition and diversity in the video
programming market. (Dkt No 92-264, FCC No 05-96, DA No 05-1632) DOC-258699A1.pdf
DOC-258699A2.pdf
FCC-05-96A1.pdf
FCC-05-96A2.pdf
DA-05-1632A1.pdf
Interconnected VOIP Providers Required
to Provide Enhanced 911 Service - The FCC took steps
to protect consumers by requiring that certain providers of
VOIP phone service supply enhanced 911 (E911) emergency calling
capabilities to their customers as a mandatory feature of the
service. (Dkt No 04-36, 05-196, FCC No 05-116) DOC-258818A1.pdf
DOC-258818A2.pdf
DOC-258818A3.pdf
DOC-258818A4.pdf
DOC-258818A5.pdf
FCC-05-116A1.pdf
FCC-05-116A2.pdf
FCC-05-116A3.pdf
FCC-05-116A4.pdf
FCC-05-116A5.pdf
WTB Delays Automatic
Termination of Licenses – The FCC has postponed until fall 2005
implementation of the automated feature in its Universal Licensing System
that identifies unconstructed stations resulting in automatic termination
of licenses and announces a new license search on build-out deadlines.
(DA No 05-1362) DA-05-1362A1.pdf
FCC Launches New E-Mail Service –
Used to deliver timely and customized communications information to subscribers. DOC-258976A1.pdf
OET Seeks Comment on Proposal by
United Telecom Council to Serve as Database Manager for Access Broadband
Over Power Line Systems - (DA No 05-1637, Dkt No 04-37) DA-05-1637A1.pdf
Auction of Multichannel Video Distribution
and Data Service Licenses Scheduled for December 7, 2005 - (DA
No 05-1555, Auction No 63) DA-05-1555A1.pdf
FCC Provides Notice Requirements
for C-Band Coordination by Earth Stations on Vessels
- (DA No. 05-1671) DA-05-1671A1.pdf
SATELLITE
FCC International Bureau Provides
Guidance on ESV Coordination
The International Bureau issued guidelines to remind ESV operators of
the requirements for C-band coordination by earth stations on vessels.
Section 25.221 of the Commission’s rules contains
provisions for Blanket Licensing for Earth Stations on Vessels in the
3700-4200 and 5925-6425 MHz Band, i.e., in the C-Band. Section 25.221(e)
requires that C-Band ESVs complete coordination prior to operating within
200 kilometers of either the baseline of the United States or U.S.-licensed
fixed offshore installations. Coordination is to be completed using a
coordination method and interference criteria objective determined by
the frequency coordinator. Upon completion of coordination, a notification
must be sent to the Commission, whereupon the Commission will issue a
Public Notice. Pursuant to 5 U.S.C. § 553(b)(3)(A), the International
Bureau provides the following information as guidance in connection with
Section 25.221(e) of the Commission’s rules.
In order to be placed on Public Notice, the notification
of the successfully-completed frequency coordination must contain the
following information:
- Name and contact information of the frequency coordinator;
- Reference identification, date, and duration (if relevant)
of the coordination report;
- Frequency coordination method used;
- Interference criteria used;
- Speed of coordinated vessel, if relevant;
- Center frequencies, bandwidths, and total spectrum coordinated
per satellite;
- Name of satellite(s) and transponder(s) being used;
- Textual description and scaled map of the geographic
area(s) coordinated;
- 24/7 contact information for the ESV operator;
- Call sign of the hub station if independently licensed;
- Statement indicating that as of the date of this notification
there are no unresolved coordination requests which would result in
an exceedance of the maximum 180 megahertz of coordinated spectrum for
all ESV operations in the coordination area in Section 25.202(a)(8).
More information can be found at http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-05-1671A1.doc
FCC Mandates Electronic filing of Applications for all International
Telecommunications Services
As part of the FCC’s continuing effort to streamline the filing
processes they have adopted Mandatory Electronic Filing of all applications
and other filings related to international telecommunications services.
Subject to the effective date of the rules and the transition period adopted
in the Report and Order (FCC 05-91), the FCC will no longer accept manually
filed applications and notifications related to the provision of international
services, including accounting rate modifications; requests for assignment
of a data network identification code; foreign carrier notifications;
applications related to international section 214 authorizations; applications
related to submarine cable landing licenses; requests for recognized operating
agency status; and requests for assignment of an international signaling
point code. The mandatory filing requirements will be implemented in stages
as new forms are developed for the FCC IBFS filing system.
The FCC order can be found at http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-05-91A1.doc
Wildblue To Offer Service In June
Wildblue Communications Inc. announced it would begin rolling out satellite
Internet service, providing high-speed Internet connections to homes and
small businesses in communities in the continental United States not currently
served, or underserved, by other high-speed Internet providers. As previously
announced, Wildblue initially will be available through participating
members of the National Rural Telecommunications Cooperative (NRTC). The
Wildblue service will be rolled out by NRTC members during the month of
June and will be offered by more than 280 rural electric and telephone
companies by the end of the month. Wildblue plans to add rural consumer
electronics and satellite TV dealers across the country throughout the
following few months and expects to reach national availability of its
service by the end of the third quarter 2005.
What's New at Comsearch!
Comsearch Keeps the Wireless Peace
at SUPERCOMM 2005
Comsearch managed all wireless communications planning and usage prior
to and during this huge telecommunications industry trade show. This included
coordination with wireless carriers serving the Chicago market, coordination
among exhibitors, and on-site interference monitoring. With over 600 exhibitors
at SUPERCOMM 2005,
it’s critical that the frequencies used for the wireless demonstrations
not interfere with each other and with other licensed wireless operations
in the area.
Using our IQ·clear® interference analysis software and engineering
expertise, Comsearch’s spectrum management process efficiently addressed
the interference and frequency coordination issues for SUPERCOMM’s
temporary wireless demonstrations.
Comsearch Offers Protection Services
to 6.1 GHz Terrestrial Microwave Facilities Operating Near the Coast,
a Waterway, or Harbor!
The FCC’s January 31, 2005 ruling granting primary status to shipboard
earth stations allows them to transmit on frequencies that are co-channel
with microwave receivers near the waterways, thus increasing the potential
for RF interference.
Comsearch’s 6.1 GHz Terrestrial Microwave Protection Services help
ensure that your systems are free of interference and any potential problems
with other systems are identified during the coordination process.
To find out more about Comsearch’s Coordination and Frequency Protection
Services or about the FCCs ESV rulemaking contact Denise Finney at customersupport@comsearch.com
or at 800-318-1234.
Comsearch, in Cooperation with the
FCC, Offers Online Database Management for Multi-Gigabit Point-to-Point
Communications
Licensees in the 71-95 GHz bands are encouraged to register their links
through http://www.gigabitlink.com,
Comsearch’s online registration database. Registration with a database
manager is an FCC requirement, and registration with Comsearch promotes
rapid deployment of new services. We offer up-front interference analysis
with commercial systems as well as automatic coordination with the NTIA.
This efficient registration procedure and management process promotes
interference-free operations with shared commercial and government licenses.
Comsearch Committed to iQ.link®
Customer-Driven Improvements
Version 8.3 of iQ·link, the industry-leading fixed network planning
tool, was delivered in May of 2005. This new release included several
new features and enhancements in the areas of Engineering, Performance
and Usability. This new functionality keeps the product current with the
latest industry recommendations, while continuing to improve upon the
overall efficiency. Click
here for more information.
The roadmap for this product is highly customer-driven.
Comsearch hosts annual User Conferences to provide our users with the
opportunity to share ideas, improve their understanding of the product
and provide direct feedback to the development and support teams. The
next iQ.link user conference is scheduled for October of this year.
Comsearch Presents “Conquering
Wireless Challenges in the Hospital” at the ASHE (American
Society for Healthcare Engineers) Annual Conference in Anaheim, CA on
July 12. The explosion of wireless in healthcare makes the hospital one
of the most complicated RF environments known. Mark Gibson, senior director,
business development for Comsearch will provide insight on the design,
implementation, and maintenance of wireless operations in a hospital environment.
For more information on the ASHE 42nd Annual Conference and Technical
Exhibition, July 10-13 click
here.
If you have been forwarded WirelessPulse by a friend
or colleague and wish to subscribe
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