Tableau national de répartition des bandes de fréquences
4 mai 2021 ... fréquences ainsi que de celles des services de police
ORGANISATION DU SPECTRE DES FRÉQUENCES
Bande VHF. 30-300 MHz. Bande UHF. 300 MHz-3 GHz. Bande SHF. 3 GHz-30 GHz. Bande EHF. 30 Réseau police. Réseaux professionnels (PMR). Météorologie par ...
Sommaire
C'est génial avec l'écoute de 2 fréquences VHF ou. UHF dans la bande passante POLICE MUNICIPALE. MARLY. 443975. POLICE MUNICIPALE. MARLY. Page 8. 8/14.
MARITIME
3.2 Fréquences de la bande VHF marine. La bande de fréquences VHF réservée au service maritime s'étend de 156 à 174 MHz mais la plupart des équipements VHF
Consultation publique relative à la Stratégie de Gestion des
13 août 2018 Bandes de fréquences MF/HF et VHF/UHF ... a) Assainissement des bandes de fréquences MF HF
COMMUNICATIONS RADIOS LOCALES
les services locaux de gendarmerie police et secours
Tableau national de répartition des bandes de fréquences
11 avr. 2019 ... fréquences ainsi que de celles des services de police
© Autorité de régulation des télécommunications Décision n° 04
2004 attribuant des fréquences à des sociétés pour leur réseau radioélectrique Fréquence d'émission en MHz. POMPES FUNEBRES M LELEU. BERCK. 62. 710000.
Manfluvial CRR Mars 15
15 mars 2023 propagation des fréquences VHF et UHF. 5. Connaissances élémentaires ... Les règlements particuliers de police peuvent prescrire le couplage ...
MANUEL DE PREPARATION DU CRR FLUVIAL
propagation des fréquences VHF et UHF. 5. Connaissances élémentaires du but 4241-51-1) indique l'obligation imposée par l'autorité chargée de la police de la ...
ROYAUME DU MAROC
Ensemble de fréquences comprises entre 3 et 30 MHz. 1.34/ Citizen Band (C.B.) : Ensemble de fréquences comprises entre 269 et 27
Tableau national de répartition des bandes de fréquences
4 mai 2021 Le TNRBF précise pour chaque bande de fréquences radioélectriques ... de ses propres fréquences ainsi que de celles des services de police
Tableau national de répartition des bandes de fréquences
11 avr. 2019 Le TNRBF précise pour chaque bande de fréquences radioélectriques ... de ses propres fréquences ainsi que de celles des services de police
ROYAUME DU MAROC
RADIOCOMMUNICATIONS HF- VHF – UHF. fréquence Détresse VHF : 1215 Mhz
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Konzessionsgesuch für eine drahtlose Mikrofonanlage
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planification de l'attribution des fréquences VHF. - Modification de la présentation du règlement suite à l'amendement des. RACI 1000 et 1003 (procédures.
Tableau national de répartition des bandes de fréquences
10 jan. 2019 Le TNRBF précise pour chaque bande de fréquences radioélectriques ... de ses propres fréquences ainsi que de celles des services de police
RAPPORT
24 avr. 1985 radiodiffusion sonore en modulation de fréquence utilise dans les ondes métriques ou V.H.F.
MINNESOTA PUBLIC SAFETY MOBILE RADIO VHF INTEROPERABLE
backbone to support additional interoperability infrastructure in the Very High Frequency (VHF) band that includes channels in the 150 to 174 MHz frequency range Outside of 700/800 MHz VHF is the most widely used frequency band by public safety entities in the state
State Plan for Mutual Aid Communications Frequencies Annex K - Wisc
safety entities and manufacturers supported this proposal citing the dearth of available VHF spectrum with sufficient spectral separation from commonly used VHF police and fire operating channels 13 Manufacturers claim that VRS units require 2-5 MHz of frequency separation between the mobile radio
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As technology advanced radios were introduced at frequencies above the original bands; these were designated very high frequency (VHF) and ultra high frequency (UHF) As technology advanced farther and radios began to use even higher frequencies the entire naming convention was dropped
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VHF - Very High Frequency ? Range: 30 MHz - 300 MHz ? Government and public service operate primarily at 150 MHz to 174 MHz for incidents ? 150 MHz to 174 MHz used extensively in NIFC communications equipment ? VHF has the advantage of being able to pass through bushes and trees ? VHF has the disadvantage of not reliably passing through
But I just want to listen to the Police - RadioReferencecom
frequency to that channel At this point the original user’s radio beeps and they can begin their transmission While this sounds complicated in real life this process takes less than ½ second When the user releases PTT the controller releases the Talk Group ID from the assigned voice frequency freeing the frequency up for the next
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ISPERN is a law enforcement frequency therefore use of the ISPERN frequency in the Communications Van/Mobile Command Post must be under the control of a police agency o Antenna height and effective radiated power (ERP) must be limited to that necessary to communicate with vehicle installed radios in the area of the emergency Care must be
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Jun 28 2012 · Appendix A: Broome County VHF High-Band Frequency Search Public Safety Communications System Assessment and Design Engineering Report 4 Blue Wing Services 1 Purpose and Scope The purpose of this document is to convey the results of following a process for finding VHF High-Band (HB) Public Safety (PS) frequencies licensed within
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Searches related to frequence vhf police filetype:pdf
The County has identified a need for a centralized county-wide Very High Frequency (VHF) paging and dispatch system to replace the current multiple systems operated by the County and individual municipalities The current systems are physically fragmented operate on multiple incompatible frequencies and have significant coverage gaps
What is the VHF receive frequency for law enforcement?
- Receive Frequency 155.475 Receive Tone Optionally 156.7 Transmit Frequency 155.475 Transmit Tone 156.7 Primary Discipline Law Enforcement Use by other disciplines only if directed by law enforcement State Callsign KA6570 Usage Interagency communications Name VHF Calling Acronym VCALL10
What frequency is VHF?
- This band runs in the 136-174 MHz frequency range—the most common VHF channels are 2 to 13, and UHF channels 14 to 51. The technical broadcast frequency of a channel is not necessarily the same as the channel you see on your monitor. Take a look at the channel mapping for channel 6 in Richmond, Virginia, for example.
What are police radio frequencies?
- Police radio frequencies are public information, and anyone with a radio scanner or a walkie-talkie can listen in on police chatter. This can be useful if you want to know what’s going on in your neighborhood, or it can be a nuisance if you’re trying to avoid the police.
What number is the VHF UHF repeater for the police?
- Police VHF-UHF Repeater 452.9250 466.8250 NFM South Yorkshire Police Mobile Repeater 452.9250 466.8250 NFM Thames Valley Police 452.9250 466.8250 NFM Warwickshire
| One Liberty Plaza, 165 Broadway, 22nd Floor, New York, NY 10006| F: 212.354.5668| T: 212.354.5656| akfgroup.com|
SussexCounty VHF Paging and
Dispatch Study and
Recommendations
Sussex County
Sheriff's Department
VHF Paging and Dispatch Radio
Coverage Study and
Recommendations
Report
AKF Group, LLC
Project No. Y160007-000
October 31, 2016
Sussex County NJ VHF Paging & Dispatch Study & Recommendations November 14, 2016Newton, NJPage 1
Y160007-000
| One Liberty Plaza, 165 Broadway, 22nd Floor, New York, NY 10006| F: 212.354.5668| T: 212.354.5656| akfgroup.com|
I.Introduction.
A.Sussex County requires reliable, two-way, countywide radio communications capability from its new Public Safety Answering Point (PSAP) facility to support the Sheriff's Office, Prosecutor's Office, countywide Fire Dispatch, participating law enforcement agencies, Emergency Medical Services (EMS), paging and other public safety functions. B.Reliable, countywide radio frequency (RF) paging and dispatch communications are central to the PSAP mission of quickly getting first responders to incident scenes throughout the county. The County has identified a need for a centralized county-wide Very High Frequency (VHF) paging and dispatch system to replace the current multiple systems operated by the County and individual municipalities. The current systems are physically fragmented, operate on multiple incompatible frequencies and have significant coverage gaps. Also, the majority of the systems rely on obsolescent Low Band paging technology which is being phased out by manufacturers. C.The County commissioned a feasibility study to determine if a single VHF system could be developed to provide reliable coverage throughout the county by maximizing the use of existing resources and facilities. The concept envisions a master control and dispatch facility at the existing Emergency Operations Center/Public Safety Answering Point (EOC/PSAP) and multiple remote receiver-transmitters that would be activated simultaneously ("simulcast") from the PSAP. Simulcasting is necessary because the irregular terrain in the county means that a user in the field cannot always communicate with the nearest site, which may be blocked by terrain. The best signal may come from any site, depending on the user's location.II.Proposed System
A.The study identified a total of five existing telecommunications facilities capable of supporting the proposed system. By using communications links from the EOC/PSAP, and receiver- transmitters at the remote sites, the system can provide reliable countywide VHF paging and two-way radio communications outdoors and within buildings of medium construction. B.The study also determined that an additional "collocated remote" site should be established at the EOC/PSAP central control facility (identified as Collocated Remote Site #1). This site does not significantly increase the VHF coverage provided by the other sites, but it is included in the system to provide redundancy in the event of the failure of a remote site. Remote sites are under the control of third parties and will be connected to the control center by radio links, whereas the EOC/PSAP Collocated Remote site is completely within a secure parameter and is staffed and maintained by County personnel. It is also "hard wired" to the control center, eliminating the potential for a radio link failure. The existing tower at the EOC/PSAP may need to be extended from its current 180-foot height to 195 feet using an additional 15- foot section (which is already on hand) to accommodate the radio link antennas serving the remote sites. Sussex County NJ VHF Paging & Dispatch Study & Recommendations November 14, 2016Newton, NJPage 2
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| One Liberty Plaza, 165 Broadway, 22nd Floor, New York, NY 10006| F: 212.354.5668| T: 212.354.5656| akfgroup.com|
C.All of the remote sites identified can support the requirements of the system without the need for major new investment in buildings, site improvements, utilities and/or additional tower structures although some minor site improvements will be needed. Besides the EOC/PSAP facility, which is owned by the County, three of the remaining facilities are owned or controlled by the New Jersey State Police (NJSP) and two are operated by American Tower, Inc. Preliminary surveys and contacts have determined the NJSP sites are available at no recurring cost to the County. All of the NJSP sites have sufficient tower capacity, utility power and emergency power to support the County's needs although one site has insufficient equipment space and will require the installation of an equipment shelter or small outdoor cabinet. The two American Tower sites have sufficient equipment space, power, emergency power and antenna capacity and will require a monthly rent payment of $625.00 each.III.Project Phases
A.It is anticipated that the project will be developed in two phases. The county has identified 11 priority municipalities to receive service in Phase One. These municipalities are:1.Montague Twp.
2.Sandyston Twp.
3.Frankford Twp.
4.Branchville Borough
5.Stillwater Twp.
6.Hampton Twp.
7.Fredon Twp.
8.Lafayette Twp.
9.Green Twp.
10.Walpack Twp.
11.Newton Twp.
B.The Phase One remote coverage and master control sites are:1.Collocated Remote Site #1 and Master Control Center at the existing EOC/PSAP facility;
2.Remote Site #2 at the existing NJSP 1606 tower;
3.Remote Site #3 at the existing NJSP Highpoint tower;
4.Remote Site #4 at the existing American Tower Weldon Road facility,
5.Microwave/UHF link relay site at the existing Triple Crown water tank.
C.Phase Two will require two additional remote coverage sites and additional head-end equipment at the master control site. Phase Two will serve the remainder of the county not covered under Phase One. The additional Phase Two sites are:1.Remote site #5 at the existing American Tower Vernon-Hamburg tower
2.Remote Site #6 at the existing NJSP Netcong tower.
IV.System Topology and Coverage Predictions
Sussex County NJ VHF Paging & Dispatch Study & Recommendations November 14, 2016Newton, NJPage 3
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| One Liberty Plaza, 165 Broadway, 22nd Floor, New York, NY 10006| F: 212.354.5668| T: 212.354.5656| akfgroup.com|
A.The coverage sites will be linked to the control center by a combination of existing line-of sight (LOS) microwave, near-line-of-sight (NLOS) microwave and/or UHF radio control links, depending on the final design. Path studies indicate that these links can be implemented as shown on the topographic connectivity map which can be found in Appendix A. B.The Phase One and Phase Two network topologies are shown schematically in Appendix B. C.The accuracy of propagation modeling is greatly influenced by the assumptions made in the analysis. For purposes of this report, we chose conservative assumptions so that the results represent typical, rather than best-case conditions. For example, we assumed that all portable radios and pagers were worn at hip level and had a 50% depleted battery. We also made allowances for body losses and inefficient portable antennas. For mobile units, we assumed that vehicle antennas were four feet above ground level. In all cases, we required sufficient signal strength to provide good audio quality even though intelligible audio might be possible at lower signal strengths. Finally, we used conservative receiver sensitivity and power output based on the type of unit and typical equipment specifications. Based on discussions with County officials, we used a basic criterion of -74dBm for the indoor (medium construction building) required minimum signal strength for coverage. Coverage in outdoor locations and/or using different equipment will be greater. D.The resulting propagation modeling indicates that Phase One will provide coverage to hip- mounted pagers located inside buildings of moderate construction over about 90% to 95% of the area of the Phase One municipalities. The combined Phase One and Two sites will provide approximately 90% to 93% pager coverage county-wide. In both cases, coverage to outdoor two-way portable and mobile radios should be 95% or higher. Propagation maps showing indoor and outdoor (worst-case) pager coverage for Phase One and Phase One and Phase Two combined are provided in Appendix C. E.A summary of the remote coverage site locations, management, equipment requirements, antenna mounting heights and assumptions used in the analysis can be found in Appendix D.V.Project Budget
A.A capital budget was developed for the implementation of Phases One and Two. The rough probable cost estimates provided below are based on the following assumptions:1.The facilities and antenna mounting locations currently available will remain available
when the system is constructed.2.Portable and mobile radio equipment and pagers needed to access the system will be
furnished by the using agencies and their cost is not included in this estimate.3.The operating frequencies needed by the system will be provided by repurposing existing
County frequencies.
4.The equipment for Collocated Remote Site #1 will be repurposed from existing resources.
5.Actual equipment and technology in the completed system may vary depending on final
system design and specific equipment manufacturer(s), but will be fall within the estimated costs outlined below. Sussex County NJ VHF Paging & Dispatch Study & Recommendations November 14, 2016Newton, NJPage 4
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| One Liberty Plaza, 165 Broadway, 22nd Floor, New York, NY 10006| F: 212.354.5668| T: 212.354.5656| akfgroup.com|
6.The system will be equipped to provide analog simulcast VHF paging and two-way, half-
duplex voice communications on a single channel.7.Monthly recurring costs such as rent, utilities and maintenance will be funded separately
and are not included in this cost estimate. B.The budgetary cost for Phase One was determined to be $1,152,415, including all equipment and installation, minor construction, design, engineering, licensing, permits, training, testing, systems integration and a 10% contingency. For Phase Two it is $475,640.For site-by-site details see Appendix E.
IV.Recommendations
A.The County should review this report and advise of any significant exceptions noted. B.The County should complete the identification of existing assets (including facilities, equipment and radio frequencies) to be repurposed for use in the new system. C.The County should initiate the budgeting process for the final design and implementation of Phase One and subsequent implementation of Phase Two.Appendices: A - Topographic Connectivity Map
B - Network Topology Schematics
C - Propagation Coverage Maps
D - Site Information Summary
E - Site-by-Site Budget Breakdown
Sussex County NJ VHF Paging & Dispatch Study & Recommendations November 14, 2016Newton, NJPage A-1
Y160007-000
| One Liberty Plaza, 165 Broadway, 22nd Floor, New York, NY 10006| F: 212.354.5668| T: 212.354.5656| akfgroup.com|
Appendix A - Topographic Connectivity Map
Sussex County NJ VHF Paging & Dispatch Study & Recommendations November 14, 2016Newton, NJPage B-1
Y160007-000
| One Liberty Plaza, 165 Broadway, 22nd Floor, New York, NY 10006| F: 212.354.5668| T: 212.354.5656| akfgroup.com|
Appendix B - Network Topology Schematics
Sussex County NJ VHF Paging & Dispatch Study & Recommendations November 14, 2016Newton, NJPage C-1
Y160007-000
| One Liberty Plaza, 165 Broadway, 22nd Floor, New York, NY 10006| F: 212.354.5668| T: 212.354.5656| akfgroup.com|
Appendix C - Propagation Coverage Maps
Sussex County NJ VHF Paging & Dispatch Study & Recommendations November 14, 2016Newton, NJPage C-2
Y160007-000
| One Liberty Plaza, 165 Broadway, 22nd Floor, New York, NY 10006| F: 212.354.5668| T: 212.354.5656| akfgroup.com|
Sussex County NJ VHF Paging & Dispatch Study & Recommendations November 14, 2016Newton, NJPage D-1
Y160007-000
| One Liberty Plaza, 165 Broadway, 22nd Floor, New York, NY 10006| F: 212.354.5668| T: 212.354.5656| akfgroup.com|
Appendix D - Site Information Summary
Sussex County NJ VHF Paging & Dispatch Study & Recommendations November 14, 2016Newton, NJPage E-1
Y160007-000
| One Liberty Plaza, 165 Broadway, 22nd Floor, New York, NY 10006| F: 212.354.5668| T: 212.354.5656| akfgroup.com|
Appendix E - Site-by-Site Budget Breakdown
Rough Probable Cost Estimate
Phase One
Site/Line ItemDescriptionInstalled Cost
Master Control Center New console interface, audio processors, delay modules, comparators, alarm and control
modules, link transceivers, cabinets, antennas, power supplies, filters, jack fields, cabling and associated software, 15-foot tower extension $591,000 Collocated Remote #1 Modify existing VHF transceiver and antenna$5,000Remote #2 NJSP 1606 New VHF transceiver, link transceiver, antennas, cabling, power supplies, alarm and control
module, cabling, cabinet or NEMA box $86,000Remote #3 NJSP
Highpoint
New VHF transceiver, transceiver, antennas, cabling, power supplies, alarm and control module, cabling, site improvements, cabinet or NEMA box $101,000Remote #4 Weldon
Road New VHF transceiver, transceiver, antennas, cabling, power supplies, alarm and control module, cabling, cabinet or NEMA box $86,000Repeater Site Triple
Crown New channel bank, link transceiver, antenna, power supply, cabling, NEMA box$42,000Subtotal$911,000
Soft costsDesign, engineering, systems integration, licenses, training, test and acceptance$136,650Contingency10%$104,765
Total Phase One$1,152,415
Phase Two
Site/Line ItemDescriptionInstalled Cost
Master Control Center Upgrade console interface, additional audio processors, delay modules, comparators, alarm
and control modules, link transceivers, antennas, power supplies, filters, jack fields, cabling $204,000Remote #5 Vernon-
Hamburg Mtn.
New VHF transceiver, link transceiver, antennas, cabling, power supplies, alarm and control module, cabling, cabinet or NEMA box $86,000Remote #6 NJSP
Netcong
New VHF transceiver, transceiver, antennas, cabling, power supplies, alarm and control module, cabling, cabinet or NEMA box $86,000Subtotal$376,000
Soft costsDesign, engineering, systems integration, licenses, training, test and acceptance$56,400Contingency10%$43,240
Total Phase Two$475,640
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