If you link to this instructable from another website, please include a link to the Neat Information website. If you find it interesting then use your favorite search engine to look for additional information. Handheld scanners are typically sold in electronics shops. More sophisticated read: more expensive scanners are available, especially if you get a non-portable benchtop unit. Anybody at least in the United States is permitted to monitor non-cellular radio frequencies.
You do need a license if you want to transmit e. There are many enthusiasts who just monitor radio frequencies and they overlap with amateur radio operators who also enjoy communicating with their own radios. The trick is line-of-sight. Because of the curvature of the Earth that limits you to a relatively small range unless one of the antennas is at a high location.
Of course an antenna in space is also much further away from you and the square-distance law applies a transmitter twice as far away will appear to be one quarter as powerful. But even taking that into account you can get an incredibly long range with very simple handheld equipment. Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson. The most popular satellites to monitor for amateurs are — Amateur radio satellites, including the International Space Station. Spacecraft with people onboard. NOAA weather satellites. Since the early s weather satellites have featured APT — Automatic Picture Transmission, a simple way to receive weather satellite imagery directly from the satellite. In the s this involved military surplus radios, analog circuits and a Polaroid camera pointed at an oscilloscope.
The Radio Reference Database (United States)
A handful of scientific satellites transmit data directly to ground stations, especially when real-time response is necessary. Military satellites. Paradoxically the fact that military satellites often transmit classified information makes them more interesting to monitor than other satellites.
Commercial satellites. There are a variety of commercial satellites which can be monitored on a handheld scanner, most notably the ORBCOMM store-and-forward data satellites. In many cases satellites transmit FM voice. Some satellites transmit fax or slow scan television individual television frames. Some satellites transmit packet data computer data and they generally sound like short bursts from an old dial-up modem. Rubber duckies are designed more for durability than performance.
You can optimize the performance by listening to a transmitter and making modifications e. All that consists of is a length of wire 19 inches is good for VHF attached to the base of the antenna.
It can be as simple as wrapping the uninsulated end of the wire around the base of the antenna. A less messy choice is to find a washer. The Tiger Tail adds the missing half of the dipole antenna. One of my favorite scanner antennas is a roll-up J-pole made from an old TV antenna cable. Remember the flat twin-lead ohm antenna cables before coax cables became the defacto standard? One time I was at the VIP site for a space shuttle launch with my handheld radio and the J-pole roll up antenna.
I asked a person I knew to hold the antenna for me. I told her that it was okay if the antenna got warm, but if she felt an electric shock she should drop it immediately. She almost fell for it — until I broke up laughing!The frequencies in the following list are National.
Special Agents-F-1, Animal and Plant Inspection-F-1, Commerce Department-ICC- Department of Criminal Investigation- Department of Defense-F-1, Drug Enforcement Adm. DEA - Federal Emergency Management Agency-in Wisconsin; FEMA urban search and rescue-Vhf FEMA urban search and rescue-Uhf Fish and Wildlife Service, Federal- National Disaster System Medical Control- National Weather Service- Broadcast, National Federal Government Radio System- These Frequencies are for the State of Wisconsin's following Services.
Game Wardens- Game Wardens and Parks- UW Police- UW Madison- Alcohol, Hemp and Tobacco Control- Emergency Government- State of Wisconsin- State Fair Park Police- Department of Transportation- State Patrol Mobile Data Terminals- State Emergency Medical Radio Network- Wisconsin State Patrol- Wisconsin State Patrol Districts.
District one- District two- District three- District four- District five-Don Schimmel's Radio Intrigue. Joe Carr's Tech Notes. Frequency vs. Modes and Modulation. Call Sign Prefixes. Introduction to Shortwave Listening. Tuning kHz to 30 MHz. Selecting a Shortwave Radio. Reporting and QSLs. Modern Shortwave Receiver Survey. Introducing the "Action Bands". The World Above 30 MHz. Selecting a Scanner. National Scanner Frequency Guide. Clandestine Radio. Numbers Stations. Shortwave Listening.
International Broadcasters. Scanner Listening. Web-Controlled Radios. Top of Page Most frequencies above 30 MHz are assigned on a local basis. To know where to listen for your local police or fire department, you'll need a frequency guide or directory for your locality.
However, some frequencies, particularly those used for emergency or inter-agency communications, have been allocated nationally. The following is a list of some of the more widely used and active national frequencies. Program these into your scanner and get see what you can hear! During periods of exceptional propagation, this frequency is filled with signals from hundreds or even thousands of miles away. If you're hearing distant signals here, then the 30 to 50 MHz range is also open for long distance reception.
Circuses, exhibitions, trade showsand sports teams are some of the users you can hear. Other widely used itinerant channels are All ships must monitor this frequency while at sea. It is also heavily used on rivers, lakes, etc. Air Force.
Coast Guard aviation. Navy aviators. All rights reserved. Most frequencies above 30 MHz are assigned on a local basis.Airborne planes can easily be heard from well over miles, so you don't have to live near an airport. If you do live near an airport, you can find out all the traffic control, weather, and Traffic Advisory frequencies by entering the airport at AirNav.
At most small airports that don't have control towers, the UNICOM frequency is used by the pilots use to talk to each other, usually Airports with control towers usually have an assigned Unicom channel of Most airports large enough to have control towers have the following types of channels:.
Aviation Spectrum Resources, Inc. ASRI is the spectrum manager for aeronautical "company frequencies" The primary users of these frequencies are airlines but they are also used by Fixed Base Operators FBOscorporate aviation bases, some medevac services and other entities.
Aeronautical Radio, Inc. There are no official "national" company frequency allocations, however among larger airlines there are common frequencies that you will find used by each at many different airports. Please note that "common" frequencies are less likely to be valid in busier air traffic areas due to frequency congestion e. Some common allocations include:.
When aircraft are within minutes of their destination, they may call in on a company frequency to report equipment malfunctions, delays, rerouting, and the special needs, such as wheelchairs and unaccompanied minors UM.
Sometimes, when they are about 10 minutes off the ground on their trip away from the airport, they call back with the times they were off the gate, and off the ground. Airlines with a small presence at a given airport will frequently contract out ground handling services to another airline, FBO or ground handling services company.
In these cases, an airline may use the frequency of the entity that is handling them at the airport. But just to keep things interesting, some airlines will contract out ramp handling but have their own customer service staff so they may have their own company frequency in this case. On the ground, you may find airline ground operations in the Often, you can learn of flight delays, cancellations, or gate changes on the frequencies before they are announced.
These frequencies are not listed at AirNav. They are kept on charts in PDF format, which is linked here.Don Schimmel's Radio Intrigue. Joe Carr's Tech Notes. Frequency vs.
Modes and Modulation. Call Sign Prefixes. Introduction to Shortwave Listening. Tuning kHz to 30 MHz. Selecting a Shortwave Radio. Reporting and QSLs.
Modern Shortwave Receiver Survey. Favorite Tube-Type Shortwave Receivers. Introducing the "Action Bands". The World Above 30 MHz. Selecting a Scanner. National Scanner Frequency Guide. Clandestine Radio. Numbers Stations. Shortwave Listening. Radio Collecting. International Broadcasters. Scanner Listening. Web-Controlled Radios. Top of Page The links below are to Web sites containing information of interest to scanner radio monitors.
If you run across a Web site of interest to scanner listeners, or if one of the links below does not work or changes its URL, please click here to let us know. Arizona Fire Frequencies. Statewide listings. General Scanner Frequencies.Forums New posts Search forums. Media New media Search media.
Here are some popular bands to search in North America on your scanner for new frequencies and includes some international emergency or calling frequencies. I have it in a ascending order. CB Band - Good basic list. VHF Lowband is missing. If you live in an area with forestry operations, you might hear some stuff in the MHZ zone.
Most traffic there will be SSB, or data. You left out the major band, MHZ. Although, when I was in the SF bay area a couple years ago, I found a net on Only time I've heard activity in that area. There is zero agencies on those bands where I live too rugged terrain, no fundingso I have limited knowledge about those areas.Crane Company, Inc.
This is a quick-reference list of frequencies from each country which carry some English and which may be heard in North America. Many are easily heard; some are difficult and rarely audible. My Account Sign in to access your exclusive insider benefits. Register Here. Please note that due to limited staffing, hold times may be longer than usual. We apologize for the inconvenience and we thank you for your understanding!
Your basket is currently empty. AM FM Radios. No SW frequency operates 24 hours. You may not hear anything unless you are listening at the right time, or you may hear another language, or you may hear some other country sharing the frequency. Many countries are better heard in non-English broadcasts.
Explore the dial and you will hear many fascinating things, including exotic music. Some stations only air a few minutes of English; or only in ID announcements Mexico ; or only language lessons Ecuador.
Country of origin is shown. Many of the frequencies are relayed from elsewhere. In the case of China, all of them shown below are relays. Don't assume any particular frequency is actually coming directly from the originating country. Longer frequency lists for these give you more chances to hear something directed elsewhere.
More than one station may be involved under some countries, or even outside broadcasts to that country Liberia, Nigeria, Sudan. Many of the strongest signals from strictly religious broadcasters in the US and elsewhere are not shown.Listen to Hidden Radio Frequencies including Police, Fire, and More!!! (SDR) - STEM with Mr. Duda
Crane is located in Fortuna California - the heart of redwood country and radio. Crane is located in northern California, and our surrounding areas are a natural paradise. Click below for more information. We look forward to seeing you! Enhancing lives since Customer Service Contact Us Help?
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