Continued from page 1

Note: Rebanding of Sprint Nextel in Florida runs from late 2006 to early 2008.

Public-safety frequencies in the 821-824/866-868 MHz must swap to the 851-854 MHz range exactly 15 MHz lower after general public-safety services in the 806-809/851-854 MHz range swap to 809-814/854-859 MHz.

Approximately 4.5 MHz of additional 800 MHz spectrum will become available for new and expanded public safety operations once Sprint Nextel vacates all channels below 817/862 MHz and certain other frequency changes are completed.

http://wireless.fcc.gov/publicsafety/800MHz/bandreconfiguration/
http://800ta.org/ Transition Administrator
http://www.apcointl.org/frequency/800hp.htm

In the Orange County Florida area the City of Apopka, Disneyworld (Reedy Creek), Lake County Sheriff's Office, and encrypted City of Winter Park public-safety services are now using Motorola P25 Astro digital voice. In addition, most police departments in the area are using Mobile Data Terminals (MDT) and some Computer-Aided Dispatching (CAD) plus Nextel.

In the Orange County area, Florida Highway Patrol FHP Troop K (Turnpike) and FHP Troop D (Orlando) stopped using the old analog-voice VHF and UHF radio systems. They switched to Motorola P25 Astro 800 MHz and switched again to encrypted M/A-COM ProVoice.

The State of Florida, under former Governor Jeb Bush and his administration, made a bad decision to replace their digital Motorola P25 Astro 800-MHz system with a digital proprietary and encrypted M/A-COM EDACS ProVoice 800-MHz system. That means citizens with the new Project-25 (P25) digital radio scanners cannot monitor the Florida Highway Patrol, Florida National Guard, and many other state agencies plus a few local police departments that pay MA/COMM to use the radio system. Even worse is the non-compatibility with Project-25 because the federal government and most local governments have decided to use Project-25 (P25 Astro) because it is the public-safety digital standard.

The biggest issue is not the mobile computer data of MDTs, but no longer being able to hear voice transmissions of urgent information in realtime. That is just one of many good reasons why all citizens should object to having closed communications because of Tyco's MA/COMM.
.../stepsto2.htm

The Florida Highyway Patrol (FHP) also uses a mobile computer system. The system provides in-car access to data including the state/National Crime Information Center interface, paging interfaces, e-mail interfaces, records management interfaces (Offense Reports, Arrest Reports and Warrant Tracking, Evidence Records, Field Interviews, Traffic Citations, Master Name Index, Master Business Index, Pawn Ticket and Pawn Hit, Uniform Crime Reporting, Traffic Crash, Records Management Reporting, Charge Configuration and Trespass Warning), live CAD, report review and approval, and other customizable interfaces. Features of the Mobile Computer system include a notepad, a to-do list with alarms, traffic citation with printing, traffic crash reporting, and mobile offense reports. An officer initiating a traffic stop can get information on the vehicle that is being stopped, as well as who the driver might be and maybe even a mugshot. Using information from the driver’s license, an officer can get up-to-the-minute data from various databases including the department’s databases and maybe even regional databases. If another officer stops the same individual 5 minutes later, that officer can see any data that was recorded 5 minutes ago. Officers who are coming back from several days off can get up to speed quickly by checking their computers to see what happened in their assigned areas while they were off. If an officer is called to a house, using the Mobile Computer Terminal and tapping into Remote Management System can warn the officer if there is a registered gun in the house or if occupants of the house are known to be violent.

Florida - Statewide Law Enforcement Radio System (SLERS)

Department of Management Services (DMS), Division of Communications, JOINT TASK FORCE (JTF)
Tallahassee, Florida
Statewide Law Enforcement Radio System (SLERS)
http://dms.myflorida.com/eits/public_safety/radio_communications/statewide_law_enforcement_radio_system_slers

Licensee Name: FLORIDA, STATE OF

Florida Highway Patrol (FHP) no longer uses frequencies in the VHF low-band (45 MHz) and VHF high-band (154-158 MHz)!

Service: Land Mobile - Private (LP)
Code: YF - Public Safety Ntl Plan, 821-824/866-869 MHz, Trunked
11,145 mobiles

866/821
.4375 .45 .4625 .475 .4875 .9375 .95 .9625 .975 .9875
867/822
.4375 .45 .4625 .475 .4875 .9375 .95 .9625 .975 .9875
868/823
.4375 .45 .4625 .475 .4875 .9375 .95 .9625 .975 .9875

Those frequencies could be lowered exactly 15 MHz to the 851-854/806-809 band when rebanding occurs.

Service: Land Mobile - Private (LP)
Code: YP - Public Safety/Spec Emerg, 806-821/851-866 MHz, Trunked
11,145 mobiles

853/808
.8375 .85 .8625 .875 .8875 .9 .9125 .925 .9375 .95 .9625 .975 .9875
854/809
.0 .0125 .025 .0375 .05 .0625 .075 .0875 .1 .1125 .125 .1375 .15 .1625 .175 .1875 .2 .2125 .225 .2375 .25 .2625 .275 .2875 .3 .3125

Service: Land Mobile - Private (LP)
Code: YE - Public Safety/Special Emergency and Public Safety, National
14,500 mobiles [new]

854/809
.4625 .9125 .9625 .975 .9875
855/810
.2125 .2375 .4625 .4875 .7125 .725 .7375 .9625 .975 .9875
856/811
.0125 .0625 .075 .0875 .1125 .2125 .2375 .2625 .4375 .45 .4625 .475 .4875 .5125 .525 .5375 .55 .5625 .575 .5875 .6 .6125 .625 .6375 .65 .6625 .6875 .7125 .7375 .7625 .9375 .95 .9625 .9875
857/812
.0875 .1125 .1375 .2125 .2375 .2625 .4375 .4625 .475 .4875 .7125 .7375 .7625 .9375 .95 .9625 .975 .9875
858/813
.2125 .2375 .2625 .4375 .4625 .475 .4875 .7125 .7375 .7625 .9375 .95 .9625 .975 .9875
859/814
.2125 .2375 .2625 .4375 .4625 .475 .4875 .7125 .7375 .7625 .9375 .95 .9625 .975 .9875
860/815
.2125 .2375 .2625 .4375 .4625 .475 .4875 .7125 .7375 .7625 .9375 .9625 .975 .9875

Project Overview

The Statewide Law Enforcement Radio System (SLERS) project is to provide State law enforcement officers with a shared 800 MHz radio system. When completed, this digital, computerized system will serve over 6500 users with over 14,000 radios in patrol cars, boats, motorcycles, and aircraft wherever they are in the state.

Project Management and Personnel

The State Technology Office (STO) manages this enterprise project. Section 282.1095, Florida Statutes. authorizes the State Technology Office to acquire and implement a statewide radio communications system along with the advisory Joint Task Force (JTF) on State Agency Law Enforcement Communications. This statute also establishes the State Agency Law Enforcement Radio System Trust Fund in the State Technology Office. Under the statute, the State Technology Office is responsible for the design, engineering, acquisition and implementation of the system.Agencies are included in the 800 MHz system either by statutory reference (Section 282.1095, Florida Statutes) or by acceptance into the Governor's Enterprise-wide Sharing of Resources Model. Both categories of members receive equipment and services, as provided by the M/A-COM contract. The statutory agencies are:

• Department of Business and Professional Regulation / Division of Alcoholic Beverages and Tobacco
• Department of Highway Safety and Motor Vehicles / Division of Florida Highway Patrol
• Department of Law Enforcement
• Fish and Wildlife Conservation Commission
• Department of Environmental Protection / Division of Law Enforcement
• Department of Corrections
• Department of Financial Services / Division of State Fire Marshal
• Department of Transportation

These agencies are statutorily referenced to comprise the Joint Task Force on State Agency Law Enforcement Communications (JTF). Under Section 282.1095(4)(b), Florida Statutes, the Joint Task Force may authorize other state agencies to use the 800 MHz system.

Other agencies that fall under the umbrella of the Governor's Enterprise-wide Sharing agreement include:

• Attorney General / Medicaid Fraud Control Unit
• Department of Agriculture and Consumer Services / Division of Agricultural Law Enforcement
• Department of Juvenile Justice
• Department of Lottery
• Department of Military Affairs / Florida National Guard
• Florida Senate Sergeant at Arms
• Florida House of Representatives Sergeant at Arms
• Florida School for the Deaf and the Blind
• State Attorney, 2nd Judicial Circuit
• State Attorney, 14th Judicial Circuit
• Supreme Court of Florida, Office of the Marshal

• Road Rangers use SLERS as an affiliate of the Department of Transportation
• The U.S. Fish and Wildlife Service use SLERS as an affiliate of the Florida Wildlife and Conservation Commission.

State University police departments can be ex officio members. The universities currently participating are:

• Florida Atlantic University
• Florida Agricultural and Mechanical University (Orlando campus)
• The University of Central Florida.

As of March 2007, there are nine approved Local, State, and Federal public safety entities that are third-party subscribers:

• Baker County Sheriff's Office
• Broward County Emergency Management Agency (interoperability)
• CSX Railroad Police
• Franklin County Sheriff's Office
• Glades County Sheriff's Office
• Gulf County's Sheriff's Office, Emergency Medical Service and Port St. Joe Police Department
• Hillsborough County Sheriff's Office (interoperability)
• Okaloosa County
• Social Security Administration's Office of Investigations in Florida
• Sumter County Sheriff's Office (interoperability)
• Union County

Local public sector entities can become third-party subscribers upon reaching mutually-agreeable terms with M/A-COM and subject to final STO approval.

Air-to-ground communications

In conjunction with the SLERS ground-based telecommunications system is a set of special air-to-ground communications sites utilizing 800 MHz frequencies. These sites were specifically created to allow state agency aircraft to communicate directly on the talk groups used by these personnel during routine or special operations in order to coordinate operations with ground personnel. An example of use would be a Florida Highway Patrol aircraft spotting speeders on an interstate highway and radioing the information to patrol vehicles on the ground on a standard patrol talk group or a special tactical talk group.

Since aircraft usually operate well above the ground in their normal activities, interference that would be caused by the overshoot of radio signals from the aircraft to towers beyond the area of operations would be a significant problem if it were not for the special air-to-ground communications sites. Frequencies for ten air-to-ground communications sites were carefully selected to minimize the chances for interference and only aircraft are equipped with the specific frequencies. Otherwise, ground units could lock onto the sites and use up the available channels. These ten sites are sufficient to cover the entire state and offshore and to spread the traffic more evenly between sites and channels. They are located in the following counties: Okaloosa, Gulf, Taylor, Clay, Citrus, Orange, Sarasota, St. Lucie, and Monroe (two sites).

To optimize the use of air-to-ground communications, antenna locations are carefully selected on each aircraft to provide the best signal. Usually this means locating the antenna on the bottom aft section of the aircraft. Also, pilots routinely operate the radios in the wide-area or manual system mode rather than in the automatic system selection or Proscan mode in order to prevent the radio from jumping to a different site than the site preferred for the given air-to-ground operation.

M/A-COM and the EDACS System

The State's partner for the Statewide Law Enforcement Radio System is M/A-COM, a subsidiary of Tyco Electronics. The radio system will be M/A-COM's digital, trunked EDACS system. For further information regarding M/A-COM, see http://www.macom.com.

Mutual Radio Communications

Planned build out of nine mutual aid channels throughout the state. Build-out involves licensing the frequencies, adding over 328 base stations and antenna systems to existing tower sites, and connecting the new channels to existing dispatch centers.

The nine channels in the mutual aid build-out are not yet statewide and coverage is estimated at between 38 percent to 94 percent, depending on the frequency. The new base stations will be added to ninety-three tower sites currently used for the Statewide Law Enforcement Radio System (SLERS). The use of existing sites expedites the rollout of the additional channels and provides efficiency for system maintenance as M/A-COM is already servicing those sites. Combiners are used to minimize the number of new antennas needed and reduce the amount of tower space required.

Florida 67 Counties

Alachua
Baker
Bay
Bradford
Brevard
Broward
Calhoun
Charlotte
Citrus
Clay
Collier
Columbia
Dade
DeSoto
Dixie
Duval
Escambia
Flagler
Franklin
Gadsden
Gilchrist
Glades
Gulf
Hamilton
Hardee
Hendry
Hernando
Highlands
Hillsborough
Holmes
Indian River
Jackson
Jefferson
Lafayette
Lake
Lee
Leon
Levy
Liberty
Madison
Manatee
Marion
Martin
Monroe
Nassau
Okaloosa
Okeechobee
Orange
Osceola
Palm Beach
Pasco
Pinellas
Polk
Putnam
Saint Johns
Saint Lucie
Santa Rosa
Sarasota
Seminole
Sumter
Suwannee
Taylor
Union
Volusia
Wakulla
Walton
Washington

Nationwide Interoperability Frequencies

New interoperability channels will presumably be within the following frequency ranges: 746.00-747.00, 762.00-764.00, 776.00-777.00, and 792.00-794.00 MHz. In this band, paired input and output frequencies are 30 MHz apart.

NATIONWIDE EMERGENCY (MHz) 155.475 PP

MUTUAL AID PUBLIC SAFETY
Different areas will also use specific (PP, PL, PF, GP, etc.) allocated frequencies for mutual aid.
(MHz)
866.0125 (1) Calling
866.5125 (2) Tac
867.0125 (3) Tac
867.5125 (4) Tac
868.0125 (5) Tac

Land Mobile use only
161..................................................220.8025
162..................................................   .8075
163..................................................   .8125
164..................................................   .8175
165..................................................   .8225
166..................................................   .8275
167..................................................   .8325
168..................................................   .8375
169..................................................   .8425
170..................................................   .8475

MEDICAL MUTUAL AID
------------------------------------------------------------------------
     Frequencies base and mobile       Mobile only
             (megahertz)                  (MHz)     Channel name
------------------------------------------------------------------------
463.000.............................     468.000    MED-1
463.00625...........................     468.00625  MED-11
463.0125............................     468.0125   MED-12
463.01875...........................     468.01875  MED-13
463.025.............................     468.025    MED-2
463.03125...........................     468.03125  MED-21
463.0375............................     468.0375   MED-22
463.04375...........................     468.04375  MED-23
463.050.............................     468.050    MED-3
463.05625...........................     468.05625  MED-31
463.0625............................     468.0625   MED-32
463.06875...........................     468.06875  MED-33
463.075..............................    468.075    MED-4
463.08125...........................     468.08125  MED-41
463.0875............................     468.0875   MED-42
463.09375...........................     468.09375  MED-43
463.100.............................     468.100    MED-5
463.10625...........................     468.10625  MED-51
463.1125............................     468.1125   MED-52
463.11875...........................     468.11875  MED-53
463.125.............................     468.125    MED-6
463.13125...........................     468.13125  MED-61
463.1375............................     468.1375   MED-62
463.14375...........................     468.14375  MED-63
463.150.............................     468.150    MED-7
463.15625...........................     468.15625  MED-71
463.1625............................     468.1625   MED-72
463.16875...........................     468.16875  MED-73
463.175.............................     468.175    MED-8
463.18125...........................     468.18125  MED-81
463.1875............................     468.1875   MED-82
463.19375...........................     468.19375  MED-83

Land Mobile use only
181..................................................220.9025
182..................................................   .9075
183..................................................   .9125
184..................................................   .9175
185..................................................   .9225

FIRE MUTUAL AID (MHz)
154.265 .280 .295
153.83 fireground

155.175 .205 .235 Emergency Medical Services

150.775 150.79 Portables

Channels various federal agencies may use during wildfires:

38.73, 46.77, 46.97, 49.61, 49.77, 138.225, 141.725, 163.10, 166.225, 166.6125, 166.725, 166.75, 166.775, 167.10, 168.05, 168.075, 168.10, 168.20, 168.35, 168.475, 168.55, 168.60, 168.70, 169.60, 169.90, 170.475*, 170.575**, 171.425*, 171.475**, 171.575*, 172.225**, 172.275*, 172.375**, 408.40, 414.65, 415.40, 415.50, 417.30, 417.35, 417.50, 417.80, 418.05, 418.075, 418.575 MHz. (*=States E of Miss. River; **=States W of Miss. River).

Aeronautical Operations: 117.975, 118.925, 118.95, 118.975, 119.95, 119.975, 121.935, 121.965, 122.75, 122.85, 122.9, 122.925, 123.025, 123.05, 123.075, 123.45, 132.015, 135.975, 166.675**, 167.95**, 168.625, 168.65, 169.15**, 169.20, 169.35, 170.00**, 172.60 MHz.

Most state and county forestry conservation agencies operate in the 31.18-31.98, 44.62-45.04, 151.01-151.475, and/or 159.21-159.465 MHz frequency ranges.

FCC Designated Public Safety Interoperability Channels

Recently, the FCC forced narrowband operation around certain frequencies in the VHF-High Band and UHF bands to create more Interoperability Channels. As a result, the following channels are designated for Interoperability under Part 90 of the FCC Rules, Subparts B, R and S: 47 CFR 90.20(c), 90.531(b), 90.617(a)(1), and 90.619(c)(1).

* These channels are paired as Base/Mobile and Mobile transmit for operation in Mobile Relay service.

** The FCC is expected to move these 4 trunking designations to the upper channel block (***).

Analog TV Broadcast Channels

Note: The analog frequencies will become obsolete when TV stations and viewers are forced to change to digital TV signals by February 17, 2009.
http://www.fcc.gov/cgb/consumerfacts/digitaltv.html
http://www.ntia.doc.gov/otiahome/dtv/index.html

The standard broadcast channels are the twelve VHF channels 2 through 6 and 7 through 13. The UHF channels are numbered 14 to 83, but some of these channels have been reassigned to other types of non-television communications services. All of these broadcast channels have three valid frequencies for each and every channel. The frequency shown for each channel is the "center frequency" of the NTSC visual carrier for that channel. In order to minimize interference between two television stations that could share the same channel number, a 10-kilohertz frequency offset is assigned to television stations that are nearby (200 miles is typical). The three valid picture carrier frequencies for a US television station operating on channel 2 would be 55.240 MHz, 55.250 MHz and 55.260 MHz. There are no other channel 2 video transmitter frequencies for use in the United States. The same plus and minus 10 kilohertz spacings apply to all VHF and UHF television channels for broadcast transmission in the US.

The color and sound information contained in an NTSC television signal will have the following frequency offsets from the video carrier frequencies. The color sub-carrier has a frequency of 3.579545 MHz. This sub-carrier is phase modulated with the color information of the picture and occupies approximately 1 MHz of bandwidth. The sound carrier is a frequency modulated signal with an average frequency of 4.5 MHz, plus or minus 1 kilohertz. The occupied bandwidth of this signal is approximately 75 kilohertz or less. When digital television signals become widespread, there will be a single carrier with all video and audio information as part of the digital bit stream. The resulting quadrature modulated carrier will be centered in the 6 MHz channel. The standard NTSC video carriers are normally 1.25 MHz above the lower band edge of the channel, while the sound carrier is 0.25 MHz below the upper band edge of the channel. These two offsets are the result of the 4.5 MHz difference in the two carrier frequencies.

As for the cable channels, there are different rules. Since the signals are to be kept inside the coaxial cable environment, many additional channel frequencies exist. In the event of signal leakage into the air, the channels which could interfere with aviation radio navigation and communications have frequency offsets applied to them of 12.5 kilohertz or 25 kilohertz. Any other cable channel which does not pose a risk to aviation frequencies will not have a frequency offset.

US Broadcast TV analog [non-digital] Channels and Frequencies in MHz
plus or minus 10 kHz frequency offset to television stations that are nearby each other on the same channel (200 miles is typical)

US Cable TV CATV analog [non-digital] Channels and Frequencies in MHz
Note: many cable companies have switched from analog to digital that use different frequencies.

434 MHz Amateur TV. Cable TV channel 59.

Color Dot and frequencies that are popular and in widespread use because the radios are low-cost and readily available

30.84, 33.12, 33.14, 33.40, 33.84. 35.02, 35.04, 42.98, 49.83, 49.845, 49.86, 49.875, 49.89 MHz

151.505, 151.625/Red Dot, 151.655, 151.685, 151.70, 151.715, 151.76, 151.775, 151.805, 151.82, 151.835, 151.88, 151.895, 151.925, 151.94, 151.955/Purple Dot, 154.515, 154.54, 154.57/Blue Dot, 154.60/Green Dot, 156.625. 158.40 MHz

462.55, 462.5625, 462.575/White Dot, 462.5875, 462.60, 462.6125, 462.625/Black Dot, 462.6375, 462.6625, 462.675/Orange Dot, 462.5625, 462.5875, 462.6125, 462.6375, 462.6625, 462.6875, 462.70, 462.7125, 462.725, 464.325, 464.50/Brown Dot, 464.55/Yellow Dot, 464.825, 467.5625, 467.5875, 467.6125, 467.6375, 467.6625, 467.6875, 467.7125, 467.7625/J Dot, 467.8125/K Dot, 467.85/Silver Star, 467.875/Gold Star, 467.90/Red Star, 467.925/Blue Star, 469.2625, 469.50, 469.55 MHz

902.50, 903.00, 903.4875, 904.00, 904.50, 905.6625, 906.3375, 907.00, 907.6625, 908.50, 909.3375, 910.2375, 910.9125, 912.00, 913.3375, 914.0875, 915.00, 915.8625, 916.875, 936.6375, 936.9875, 939.975, 939.3875 MHz

In addition to the above, you can look for lesser-used channels. Scan search (in FM mode) 12.5 kHz offset channel splits between 396.875 and 399.975 MHz, 463.2125 and 464.9875 MHz, also from 468.2125 to 469.9875 MHz (for example 463.2125, 463.2375, etc.).

Low-power wireless devices:
902-928 MHz Also, wireless cam control for pan/tilt/zoom uses spread spectrum hopping control channels.
2.4 GHz Also, hidden body-worn video for law-enforcement.
5.8 GHz

Gadget intended to turn handheld cellphones into hands-free units for safer mobile use. The cellphone fits into a dashboard bracket and plays the phone’s audio through the vehicle’s FM radio on 96.1 MHz.

Assisted Listening Transmitter, can operate on any channels between 72.05-72.95 MHz (50 kHz steps, such as 72.05, 72.10, 72.15, etc.), also between 74.65-74.75 MHz (50 kHz steps), and 75.25-75.95 MHz (50 kHz steps). These devices are in popular use at theatres providing movie audio. They can also be used in churches, lecture halls, museums, etc.

Low Power Radio Service (LPRS) is a private, one-way short-distance communication service providing auditory assistance to persons with disabilities, persons who require language translation, and persons in educational settings, health care assistance to the ill, law enforcement tracking services in cooperation with a law enforcement agency, and point-to-point network control communications for Automated Marine Telecommunications System (AMTS) coast stations.
260 LPRS channels 216.75-217.0 MHz

Various [non-digital, non-encrypted, not hidden in sub-carriers] wireless microphones use Wide FM (WFM) or Narrow FM (NFM) mode and run low power with an average range of 200-300 ft.

MHz

26.15, 26.25, 26.30, 26.45, 30.84, 33.12, 33.14, 33.40, 35.02, 42.98, 49.83, 49.845, 49.86, 49.875, 49.89

72.02, 72.80, 74.42,75.98

149.35, 164.462w, 164.8625w, 164.9125x, 165.5125c, 165.9125c, 166.2875c, 166.6625w, 166.8625w, 167.3375k, 167.3425k, 167.4875k, 167.875, 169.445*, 169.505*, 169.625, 170.245*, 170.305*, 170.4125c, 171.045*, 171.105*, 171.45**, 171.60**, 171.65a, 171.751, 171.845*, 171.85k, 171.90, 171.905*, 172.00**, 172.20a, 172.2125k, 172.2375k, 172.2625k, 172.30a, 172.3125k, 172.3375k, 172.3625k, 172.3875k, 172.55, 173.3375, 173.80, 174.10, 174.50, 174.60, 174.80, 175.00, 175.30, 175.40, 175.80, 177.00, 177.60, 177.70, 178.00, 178.225, 178.40, 178.80, 179.20, 180.80, 181.00, 181.40, 181.60, 181.80, 183.00, 183.40, 183.60, 183.80, 184.00, 184.20, 184.25, 184.80, 185.125, 185.15, 186.60, 186.80, 187.40, 187.80, 189.40, 190.00, 190.125, 190.40, 190.60, 190.80, 191.30, 191.325, 192.60, 192.80, 193.40, 193.80, 195.40, 195.60, 195.80, 196.00, 196.60, 196.80, 197.20, 197.275, 198.80, 199.40, 199.60, 199.80, 201.40, 201.80, 202.00, 203.175, 203.40, 204.80, 205.40, 205.80, 207.40, 208.00, 208.15, 208.40, 208.80, 208.825, 209.15, 209.20, 210.80, 211.40, 211.80, 213.40, 213.80, 214.00, 214.80, 215.20

406.275z, 407.80x, 408.50z, 408.575x, 408.975x, 409.40x
Also, "within the envelope" of any UHF broadcast TV stations (400 - 900 MHz)

Frequencies used by television news crews who use Sony FM microphones
902.7500 Ch. 11
904.0000 Ch. 12
905.0000 Ch. 13
908.2500 Ch. 14
908.5000 Ch. 21
909.0000 Ch. 15
909.7500 Ch. 22
910.7500 Ch. 23
911.0000 Ch. 16
912.7500 Ch. 17
914.0000 Ch. 24
914.2500 Ch. 31
914.7500 Ch. 25
915.7500 Ch. 18
916.7500 Ch. 26
917.2500 Ch. 32
918.5000 Ch. 27
919.0000 Ch. 33
921.0000 Ch. 34
921.5000 Ch. 28
921.7500 Ch. 35
925.0000 Ch. 36
926.0000 Ch. 37
927.2500 Ch. 38

Search for additional freqs near the above, also 163-174, 406-420, 470-488, 535-677, 770-806, 902-908 MHz bands. Disney parks' wireless mics reported using many of the above listed freqs, also in 470-488 and 535-806 MHz bands.

Many microphone kits and cheap imports operate in 54-150 or 200-400 MHz bands.

While commercial wireless microphones are found between "DC and Light" most of the products tend to be around specific bands.

35 - 50 MHz
54 - 117 MHz
136 - 216 MHz
450 - 890 MHz
902 - 928 MHz
944 - 960 MHz

Spread Spectrum/Audio/Video devices
225 - 550 MHz
800 - 990 MHz (902-985 MHz ISM band is popular)
1.10 - 1.95 GHz (980 MHz to 1.45 GHz is very popular)
2.00 - 2.75 GHz (2.4 to 2.6 GHz is extremely popular)
5.60 - 7.50 GHz (5.8 to 6.2 GHz is becoming very popular)
8.0 - 13.00 GHz (Popular)
20.00 - 26.00 GHz K-band (Gaining Popularity)
70.00 -110.00 GHz M-band (Gaining Popularity)

850 - 950 nm Infrared Transmitters

DC - 3 kHz part of the Audio Band
3 kHz - 500 kHz Skin Effect (Non Radiating)
500 kHz - 3 MHz Non Radiating, Conducted RF
3 MHz - 300 MHz Conducted RF, Free Space Radiating
300 MHz - 3 GHz Free Space Radiating RF, Slightly Directional
3 GHz - 22 GHz Free Space, Low Attenuation., Highly Directional
22 GHz - 60 GHz Water Vapor Absorption Band
60 GHz - 3 Thz Limited Usage For Covert Surveillance

http://www.tscm.com/threatlvls.html Note levels 6 and above

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