Taking notes.. map notes.. and trying to see & listen to the ques the land gives me. This book will give you all of the information you need for repeaters in your area, perchance the power ever goes down and youre not able to use your phone or the internet to figure out what repeaters are around you. [tabs] About [callout] Rule Part 47 C.F.R, Part 95 [/callout] The Multi-Use Radio Service (MURS) uses channels in the 151 - 154 MHz spectrum range. I have included different sets of channels used by people in various countries around the world. High Band VHF Frequencies: MURS VHF | MURS 3 | 151.940 FM | MURS PREPPER PRIMARY 151.940 MHz FM is the MURS Prepper channel, known as MURS Channel 3. While it requires a license to transmit, ham radio will allow you a range and breadth of communication that is not available post-disaster via other methods. Advisory Circular 90-50C, VHF . Mobile radios of at least 25 watts, are essential. Test flight frequencies are sprinkled throughout the VHF aviation band between 123.125 MHz and 123.575 MHz. To avoid this from happening, you need to program the transceiver with local amateur frequencies. The Civil Air Patrol will use VHF airband frequency 123.1 MHz for air-to-air coordination during search and rescue (SAR). Just my 2 cents. You can buy the classic CB radio for around $100. Its name refers to the radio frequency used by the signal (1227 MHz, or L2) and the fact that it is for c ivilian use. the National Communications Commission on radio frequency device inspection. 1998-2023 PilotMall.com All rights reserved. This is just the kind of information the public NEEDS for when Hillary Clinton uses her Illuminati powers granted to her by the Reptilians to control Bigfoot when he comes to tAK HouR GUNzs?!!! and specified radio stations to be known as "Basic Key Stations." Most of the new signals will be of limited use until they are broadcast from 18 to 24 satellites. Why is this article valuable? There are many region and state-level HF nets on various schedules. Frequencies After activation, the IDHS RACES team will monitor 3.920 MHz LSB and 7.290 MHz LSB. 27,15500 - CB Channel 16 - open to all ( also for SSB cb radio) 27,16500 - CB Channel 17 - open to all-North/South Traffic. I would also encourage you to print this article off to keep should you need it some day down the road. The VHF frequency ranges used for aviation are: Within the VHF aviation communication frequency range, the most commonly used frequencies and their corresponding allocations include: En Route Flight Advisory Service (Flight Watch), Air-to-Air (Gliders and hot air balloons). To accept the use of all cookies, click "Accept all". CONELRAD (Control of Electromagnetic Radiation) was a method of emergency broadcasting to the public of the United States in the event of enemy attack during the Cold War. Requirements for Civil Aviation. [2] [3] Both communication and VOR navigational systems are operated on VHF frequencies. Note: More than one of the three categories above can be used, if appropriate. The ability to communicate post-disaster is absolutely essential if you want to make the most informed, and safest decisions that you can. Also be aware, however, that during times of war, Amateur Radio licenses are historically likely to be revoked, and repeaters are no longer available. Im a licensed ham radio operator personally and have been since the 1970s. Accept Read More, Emergency Radio Frequencies Preppers Must Know, Midlands Dual Band Amateur Two-Way Radio, ways to find important ham radio frequencies, National Oceanic and Atmospheric Administration, ARRL National Association for Amateur Radio, Amateur Radio Ham Radio Repeaters by State, International Distress, Safety, and Calling, Channel 3 (26.985 MHz) Prepper CB Network (AM), Channel 4 (27.005 MHz) The American Preppers Network (TAPRN), Channel 9 (27.065 MHz) Universal CB Emergency/REACT channel, Channel 13 (27.115 MHz) Typically used within campgrounds and marine areas, Channel 15 (27.135 MHz) Used by Californian truckers, Channel 17 (27.165 MHz) Used by Californian truckers headed east/west, Channel 19 (27.185 MHz) Main trucker channel, Channel 36 (27.365 MHz) Survivalist network, 34.90 Nationwide National Guard frequency during emergencies, 39.46 Inter-department emergency communications by police, 47.42 Nationwide Red Cross channel during humanitarian aid missions, 121.50 International frequency for aeronautical emergencies, 138.225 Disaster relief channel used by FEMA, 154.265 Used by firemen during emergencies, 154.28 Used by firemen during emergencies, 154.295 Used by firemen during emergencies, 155.160 Used by various agencies during search and rescue operations, 155.475 Emergency communications for police, 156.75 International maritime weather alerts. Two meters is very rarely good for anything other than line of sight. You want to know what everyone else is doing and thinking as well. As mentioned earlier, there are two ways to use your radio. Nationwide frequencies are available for use by all regions, as are Net 9 and Net 10 frequencies. Foreign registered home built aircraft and certain foreign registered historic aircraft. Some VHF Omnirange (VOR) navigation stations and aircraft navigation beacons transmit voice communications in addition to their navigation functions. Local communications. . It not only is incredibly easy to use, but its a relatively easy form of disaster communications to break into. Background The CB Service provides a service Use Cockpit for Linux remote server administration. CB and ham users with modified equipment often use frequencies 27.575 and 27.585 illegally, as well as frequencies from 26.480 to 26.960, which belong to the U.S. military. Cost sharing flights. 75 meters. As part of this authority, NTIA developed the NTIA Manual to provide further guidance to applicable Federal agencies on the use of the radio frequency spectrum for radio transmissions for telecommunications or for other purposes. We must able to perform the third most important part needed to defend ourselves. Leaving on a month + long .. leaping bug out trip & test to see the country Sept 13th. They are only called up after RACES has been activated. Melbourne metro scan frequency guide Police, fire, transport, ambulance and many more frequencies Newcastle Scanning KD0JGB. All ground frequencies start with 121 and have an odd tenth at the end. In case of alarm, 640 and 1240 KHz were the only allowed frequencies. The Federal Communications Commission (FCC) is an agency that regulates communications including radio in the United States. Ch. Return to Wiki page: Common Frequencies, Ky Emergency Management - Ky National Guard. R63 Airborne/Portable Tactical Repeater Digital, Ch. Frugal Radio notes that there are often many signals in the UHF milair band, but they can be difficult to find without a scanner. A very similar false attack alarm was sent to radio and television stations through CONELRAD's replacement, the Emergency Broadcast System, at 9:33 AM EST on Saturday, February 20, 1971. A yellow alert meant "attack expectable", and the word was sent to government and civil defense organizations. R67 Analog, Airborne/Portable Repeater Ch. The stations that stayed on the air would transmit on either 640 or 1240kHz. The full allocation list covering all 760 channels in the VHF aviation band is posted in FAA advisory circular 90-50D. Youll also want to know some ways to find important ham radio frequencies beyond what I have below. Civil Air Patrol CAP MF and HF Frequencies, https://www.hfunderground.com/wiki/index.php/Civil_Air_Patrol, Primary repeater (input: 143.5500 MHz, various CTCSS tones or NAC codes), Secondary repeater (input: 143.7000 MHz, various CTCSS tones or NAC codes), Airborne and/or portable/tactical repeater (input 143.6250 MHz, various CTCSS tones or NAC codes), 4636 kHz USB - Net 1 - Regional primary, also a, 7615 kHz USB - Nationwide, also a nationwide, 7637 kHz USB - Net 8, alternate nationwide use, Papa Charlie Delta PCD frequency alt. Vince In the United States, VHF civil aircraft communications are placed in the 100 MHz band and allocated 760 channels within the range from 118.0-136.975 MHz. [9], On the evening of November 5, 1959, WJPG, the CONELRAD control station for northeast Wisconsin and Upper Michigan was incorrectly sent an alert status message, "This is an air defense radio alert", rather than what should have been sent for a test, "This is an air defense line check." [1], Unlike the EBS and EAS, CONELRAD was never intended for use in local civil emergencies such as severe weather. Click here to see FCC frequency listings for Jefferson County KY Color Legend: Blue=Motorola, Green=LTR, Yellow=EDACS Scroll down to see services other than Police/Fire/EMS Area Frequencies Anchorage Jeffersontown Louisville Shively Amateur Radio Rev. Part of the reason is due to the fact that there is no license required to receive or transmit. Store it with your communication equipment. Similar services include General Mobile Radio Service (GMRS) and When adding a new article for this topic, please CATEGORIZE the new pages by applying categories on the last line of the article, as follows: Bureau of Alcohol Tobacco Firearms and Explosives (ATF), Radio Spectrum Management and Allocations, https://wiki.radioreference.com/index.php?title=Common_Frequencies&oldid=309650. 5 Ways to Contact Loved Ones After the Grid Goes Down, 3 Ways to Communicate Through the Apocalypse, How to Get a Ham Radio License in the USA, 2182 kHz International maritime distress frequency for radio telephony, 4340 kHz NATO combined submarine distress, 34.90 MHz Often used by the National Guard for emergency purposes, 39.46 MHz State and local police forces for inter-departmental emergency communications, 121.5 MHz International aeronautical emergency frequency, 151.940 MHz Emergency channel used by preppers, 154.52 MHz Local fire departments for inter-department emergency communications, 155.60 MHz State and local agencies for inter-department emergency communications, 156.75 MHz International news channel that broadcasts maritime weather, 156.80 MHz (VHF Channel 16) Global emergency radio transmissions, 156.85 MHz International maritime distress, calling and safety frequency, 163.4875 Another frequency often used by the National Guard for emergency operations, 243.0 MHz NATO combined distress and emergency frequency, 406.0 Emergency position indicating locator beacon (EPIRB), 38.080 MHz Caribbean weather information, 38.730 MHz West and Central Gulf ARES/Louisiana ARES, Mississippi ARES, 39.100 MHz Central Texas Emergency/Mississippi ARES/Louisiana Traffic, 39.230 MHz Mississippi ARES, North Carolina ARES, 39.250 MHz Central Gulf Coast Hurricane, Louisiana Emergencies, 39350 MHz Central Gulf Coast Hurricane, Louisiana ARES, Texas ARES, Mississippi ARES, Alabama Emergencies, 39.500 MHz Hurricane Watch/Norther Florida Emergency, 39.935 MHz Gulf Coast health and welfare/South Carolina ARES/South Carolina RACES, 72.250 MHz Central Gulf Coast Hurricane, 72.350 MHz Louisiana Emergency/Central Gulf Coast Hurricane, 72.400 MHz American Red Cross/US Gulf Coast, 72.430 MHz Alabama Emergency/South Carolina Emergency, 72.640 MHz Gulf Coast health and welfare, 72.650 MHz Salvation Army Team Emergency Radio (SATERN), 72.850 MHz West Gulf ARES (day)/Louisiana ARES (day)/Mississippi ARES/Texas ARES, 72.900 MHz Central Gulf Coast Hurricane, Gulf Coast Weather/Louisiana ARES/Texas ARES/Mississippi ARES, 142.680 MHz Amateur Radio Readiness Group, 143.030 MHz International Assistance and Traffic, 213.100 MHz Health and Welfare (Spanish), Channel 3 @ 26.985 MHz Prepper CB Network, Channel 4 @ 27.005 MHz The American Preppers Network, Channel 9 @ 27.065 Universal CB Emergency & REACT Channel (Radio Emergency Associated Communication Teams), Channel 13 @ 27.115 MHz Typically used in campgrounds and marinas, Channel 14 @ 27.125 MHz Childrens walkie-talkie frequency, Channel 15 @ 27.135 MHz Used by truckers in California, Channel 17 @ 27.165 MHz Also used by truckers in California, when heading east & west, Channel 19 @27.185 MHz Main trucker Channel, Channel 36 @ 27.365 MHz Survivalist Network, Freeband 27.3680 MHz Survivalist Network, Freeband 27.4250 MHz Survivalist Network. CONELRAD Logo, incorporating the shield of, Last edited on 15 November 2022, at 05:32, "WE MUST BE READY FOR A NEW DANGER: OPERATION ALERT, CONELRAD, AND CIVIL DEFENSE IN THE EARLY COLD WAR", "An Emergency Alert System for the Digital Era", "City's Civil Defense Sirens Will Be Tested Tomorrow", CONELRAD.COM, "A creepy look at Cold-War culture. Going by the links below I feel it is on 148.125mhz. 5 PL to NAC Conversion Chart for Civil Air Patrol 6 Civil Air Patrol - from the RR States Database 7 Old Wideband Basic Channel Plan 8 External links New Narrowband Basic Channel Plan 'P' is appended to the channel name to designate P25 digital mode (R-01 analog, R-01P digital) New Narrowband Basic Repeater Plan FL Civil Air Patrol (Florida) Last Updated: October 20, 2020, 10:31 am For additional Nationwide listings, see here. We care about data privacy, which we consider to be a fundamental human right. A nationwide group of HAM radio volunteers with specialized training in emergency communications that provides communications services during emergencies. [2]. As far as I know, its the only channel that is distinctly reserved. Familiarize yourself with the ground frequencies because the tower controller may simply tell you something like contact ground on point 9 and expect you to know that the full frequency they are referring to is 121.9. When you purchase the BaoFeng UV-5R, it contains pre-set commercial, civil, and amateur frequencies.These can lead to accidental interference with other services. NOAA is the National Oceanographic and Atmospheric Administration which among other things, runs the NOAA Weather Radio Service nationwide. November 2009 - The Civil Air Patrol RadioReference.com Database is in the process of being updated from Wideband to Narrowband. Do not understand what soured you. R01-R61 (Odd) Primary Repeater Digital, Ch. 20230211020236 Amateur frequencies may be used by guardsmen who are licensed hams, but only when not on duty. Requirements for Civil Aviation. Neither one of these agencies license or control ham radio but hams interact with them, especially FEMA which has some agreements with hams concerning radio. oregon national guard radio frequencieswvu mechanical engineering research. Some info could be related to the outdated Wideband channels. SHARES is a multi-agency system that used frequencies assigned to several different agencies and organizations. In the early years of the Civil Air Patrol, the organization built a broad nationwide infrastructure of scheduled radio nets and trained operators serving the multiple purposes of passing administrative traffic, training, and actual mission traffic. CAP maintains capability to communicate on other US government and military HF networks including SHARES, SECURE and COTHEN, among others. 2023 Civil Air Patrol. Airliners.net - Civil Air Patrol - Photos, Airliners.net - US Civil Air Patrol - Photos, Jetphotos.net - Civil Air Patrol - Photos, Link: Civil Air Patrol is divided into eight regions. [5] Transmitters could be damaged by the quick cycling. R69 Portable and Aero Repeater Analog, Ch. The existing drone regulation (the Administrative Rules on Remote Drones) was published on 23 July 2019. The Civil Air Patrol, part of the U.S.A.F., is assigned 26.620 MHz, although now the CAP uses VHF frequencies more often. Most of the recommendations made are intended for use after a SHTF/WROL situation, or during a Civil Defense event. Sponsorships available. Keep in mind that Channel 9 is distinctly reserved for the Emergency/REACT channel. The new civil signals are phasing in incrementally as the Air Force launches new GPS satellites to replace older ones. Notify me when juicy new comments are added. This is not an exhaustive list. There is also a lengthy list of 10 codes that people use on CB radios. [5] Created in 1952 to serve in civil defense emergencies, RACES provides essential . shall, if so directed, proceed to broadcast a predetermined message and also relay the message by telephone to all "Relay Key Stations" under his control as specified." You may have a radio, but knowing how to use it to its fullest potential is quite another matter. Some links may be affiliate links. . All other broadcast stations would monitor a designated station in their area. CAP was one of the groups interested in the adoption of the "military FRS" UHF short-range service (14 channel UHF intra squad radio or ISR) as well. Frequencies. All frequencies listed below are mixed mode analog FM or digital P25 Project 25 digital voice, depending on mission requirements. Additional telephone circuits (direct line to Toll Board) will be required in certain cases, between "Basic Key Stations" and other stations to be known as "Relay Key Stations". They are useful services in an emergency and I dont think FRS requires a license, but Id definitely check on it before transmitting on one. Channel 8 to 24 are to be used for AM transmission ONLY. You can customize your cookie preferences by clicking "Cookie Settings". Radio Amateur Civil Emergency Services (RACES) is a volunteer organization of amateur radio operators who are licensed by the Federal Communications Commission (FCC) to provide essential communications for State and local governments in time of emergency. Required cookies are those that are used solely for the purpose of transmitting a communication and those that are absolutely necessary for a website to provide the service that a user is requesting. Multi-Use Radio Service (MURS) is an unlicensed two-way radio service similar to CB but on VHF FM. All rights reserved. Grouped. VOR navigational frequencies are allocated to the range from 108.0 to 117.975 MHz, positioning them just below the communications range. Designed and developed by Prepper Press, This site uses cookies to improve your experience. Click here for more information. Click Here to Get Your FREE One Year Urban Survival Plan! View this and more full-time & part-time jobs in Severna Park, MD on Snagajob. A much more powerful mobile should be used in vehicles, or as a base station that talks to hand held radios. Upon alert, most AM medium-wave stations shut down. This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. No comms. And there might be GMRS repeaters in your area. You have reviewed your ATC communication skills and studied your copy of Aviation Radio Communications Made Easy. Category Report. The third-party cookies procedures are managed and controlled exclusively by each provider in accordance to their own privacy policies. (Reposted on Gab, and possibly on survivalblog.com). tiny black tadpole looking bug in bathroom; ff14 plasmoid iron lake location; top 10 most dangerous areas in cape town; cockapoo rescue michigan; floris nicolas ali, baron van pallandt cause of death; This message was sent by accident instead of the usual weekly EAN test. That takes a bit of study to figure out how to do, however. Ive been an amateur radio operator since the 1970s. Aircraft frequencies, EU and UK This is the list of aircraft frequencies for UK and Europe. Channel 9 on Citizens Band is actually reserved by Federal law for emergency use. R02-R62 (Even) Secondary Repeater Analog, Ch. Channels are generally spaced 10 MHz apart. Citizens Band (CB) radio is particularly popular with truckers, hikers, and campers. After the development of intercontinental ballistic missiles reduced the likelihood of a bomber attack, CONELRAD was replaced by the Emergency Broadcast System (EBS) on August 5, 1963, which was later replaced by the Emergency Alert System (EAS) on January 1, 1997; all have been administered by the Federal Communications Commission (FCC). They worry about not remembering what to say and how to say it when they finally key up the mic, but even if you get those variables right, it still does you no good if you are not on the correct frequency. . Types of aircraft. Radio Frequency (RF) Design Engineer - Entry to Expert Level (MD Location) Est. Also, space weather can affect communications. I am a HAM but I was soured by your comment on HF radio. Radio Amateur Civil Emergency Service (RACES) is an organization of amateur radio operators who volunteer for Emergency Management for the purpose of providing tactical emergency support radio communications to federal, state and local governments in time of emergency, and to supplement, augment or replace radio communications wherever and whenever needed. Menu. ). Kentucky Civil Air Patrol uses Ky Emergency Management - Ky National Guard in areas where the CAP coverage isn't adequate. In Frugal Radio's latest video he explores how you can use an Airspy or RTL-SDR dongle to scan the entire military UHF airband spectrum in a few seconds via SDR#. See the bottom of this page for Civil Air Patrol VHF frequencies. We spend thousands on guns and ammo, but this critically important part of our ability to defend ourselves receives woefully little attention in comparison, yet might only cost as little as a few hundred bucks for a box full of Boafengs. Kununurra traffic, C172, ZTQ taxiing runway 30 for Darwin, Kununurra. Ham Radio Frequencies (Channels) The UV-5RA has 128 channel memory slots available. Volume II - Frequency assignment planning criteria for aeronautical radio communication and navigation systems (ICAO Doc 9718, Volume II) Frequency Management Workshop for Gulf Cooperation Council (GCC) Abu Dhabi, UAE, 9-11 January 2023 . I think one of the longest communications ever made on 2 meters occurred between the mainland and Hawaii sometime back (dont remember the year) under similar circumstances. Think of higher frequencies as a composition of the following bands: HF, VHF, and UHF bands, like FM radio, public service radio, broadcast television sound, global positioning systems, and cell phones. Volunteers serving America's communities, saving lives, and shaping futures. They would transmit for several minutes and then go off the air, and another station would take over on the same frequency in a "round robin" chain. The lowest 10 MHz of the band, from 108 to 117.95 MHz, is split into 200 narrow-band channels of 50 kHz. You are all ready to turn that radio on and get cleared for takeoff. Most of the time, my 50-watt HAM Radio goes about 30-50 miles on 2 meters. GPS Technology operates in the following frequency bands: GPS L1 Band: 1575.42 MHz with a bandwidth of 15.345 MHz GPS L2 Band: 1227.6 MHz with a bandwidth of 11 MHz GPS L5 Band: 1176.45 MHz with a bandwidth of 12.5 MHz GPS is the most widely used GNSS (Global Navigation Satellite System). It covers the frequencies used in aircraft systems which include LOS, VOR, GS, TCAS, ATCRBS, DME, GPS L2, GPS L5, L1 etc. All comments are moderated before being published, PilotMall.com Inc.23 Kelli Clark Ct SECartersville, GA 30121, Aeroplane Apparel CompanyHigh Flying ModelsPilot Toys. You are not going to find something that can do local regional national communications at the same time. Within the FCC, the Office of Engineering and Technology ( OET) provides advice on technical and policy issues pertaining to spectrum allocation and use. Before take-off or during taxi. Works on any PC or Mobile running Windows, Mac, IOS, Android and more. It can be used in the home or mounted in your vehicle. Personalization cookies are those that enable a user to access a website and receive services that are catered to that user's pre-defined characteristics, such as language, browser type used to access the service, regional configuration from where the service is accessed, etc. Mostly line of sight like you say. Out of sheer pandemic boredom, I ordered the ubiquitous Baofeng radio over the summer. For example, If the new article lists a business-frequency which is used in both Washington State, and in British Columbia, then the categories. Examples include an authentication cookie that identifies a user for the duration of the session once that user logs in to a website or a cookie that keeps track of items placed in an e-commerce shopping cart. The only possibility would be the 20 meter amateur band. 157.125 MHz - US Government only 157.150 MHz - US Coast Guard 243.0 MHz - NATO combined distress and emergency frequency 406.0 - Emergency position indicating locator beacon (EPIRB) 38.080 MHz - Caribbean weather information 38.450 MHz - Gulf Coast 38.625 MHz - Mississippi Area Traffic 38.650 MHz - West Virginia Emergency Even with the short alert window, many radio and television stations went off the air in accord with CONELRAD procedure, but the alert was not long enough for stations to start broadcasting on the two authorized CONELRAD frequencies. A meteorologist whos also a ham told me the propagation was made possible by ducting where the different air masses actually help the radio signal. The higher the antenna the better. The CB with SSB can also talk to regular CBs. However, the system's alerting protocol could be used for alerting of natural disaster by 1957. I spent a few hours studying, then went to a local ham club and passed the technician exam. In addition to the frequencies listed below, Civil Air Patrol radios are programmed with the USCG VHF marine frequencies, the MURS frequencies and the nationwide VHF interop frequencies. Freebanding offers improved privacy over the typical 40 channels (simply because less people use it), but it by no means will give you a private conversation. Keep in mind that anything you say on CB radio frequencies can be heard by anybody else within range, so it is not a source of private conversation. Having a comprehensive knowledge of scheduling, cost estimating, QC/QA, RFI, COR, engineering drawings reviewing, and equipment testing, I analyze operations, designing, modeling, and instituting lean . A reduction of 3 dB in magnitude corresponds to 50% reduction in power, and this has been chosen as a convenient way to identify the bandwidth. 3900-4000 MHz. Since the FCC designated both of these frequencies to be used solely for test flight communications, any other use constitutes an illegal transmission, and pilots transmitting illegally could be fined up to $10,000 for each transmission or taken to small claims court for damages caused by interfering with the data transmission during a test flight. The most comprehensive and up to date UK radio scanner frequency database covering WTR, PMR, Airband, Airports, Air Control, Mil Airband / Airfields, Ham and more. Equity and non-equity aircraft ownership. As an Amazon associate, we earn from qualifying purchases. 05-? Twenty meters is a good all around band but Ive talked very long distances on 40 and 80 meters at night, and the higher hf bands can be quite good under the proper atmospheric conditions. Find UK Airport frequencies and UK Airfield frequencies to program into your radio scanner, easy export to Uniden 3600, SDS100E, SDS200E, TRX-1, TRX-2, . R63 Analog, Houston North (Ch. Not sure about GMRS. Lot to see.. lot to learn. ", "A History of CONELRAD, EBS, and the plan for EAS", https://en.wikipedia.org/w/index.php?title=CONELRAD&oldid=1121981634, This page was last edited on 15 November 2022, at 05:32. With the current potential for a civil war, or wide spread low level conflicts, especially in and around the urban and rural areas, serious considerations should be made. There . Not a wire head unskilled w/comms. As an analytical and highly-motivated professional, I have experience directing project management endeavors and electrical/civil engineering programs within a dynamic business environment. On May 5, 1955, the Continental Air Defense Command Western Division went to yellow alert for 3 to 10 minutes (depending on the alerted state), beginning at 10:40 AM PDT. The most common use of MURS channels is for short-distance, two-way communications using small, portable hand-held radios that function similar to walkie-talkies. An FRS radio might be the best choice for you. Please contribute new/current information, so we can expand the DB, CAP Additional Information can be found in the Arizona (US) and U.S. Government (AZ) articles, Arkansas Wireless Information Network (AWIN), California Wing Tactical Call Sign: "Yosemite", Iowa Civil Air Patrol - RACOM - IL, WI, MN, NE, SD, IA. In contrast, the City of Sacramento civil defense director waited for further confirmation before sounding the citywide siren; ultimately, he never did so. 148.125 MHz, 148.1375 MHz and 148.15 MHz are all part of the old analog VHF CAP frequency plan, only the old 149.5375 MHz air-to-ground frequency has been removed as part of the new narrow band FM and P25 digital CAP radio plan.