Emergency Alert Radio.

Your Guide To Radios & Walkie Talkies.

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Walkie Talkies

Walkie Talkies: What You Need to Know

Walkie Talkies are portable radio devices that are used for wireless communication. They are hand-held battery-operated units that contain a transmitter and receiver with an antenna. Multiple walkie talkies can get connected to a single radio frequency band for communication. Walkie talkies have a loudspeaker that doubles up as a microphone with a button. When you press the button, you can send a vocal message that will be received by all the other walkie talkies in the set frequency band. The more complicated walkie talkies can contain separate microphone and speakers.

The invention of walkie talkie

Walkie talkies were invested by a Canadian inventor Donald Hings in 1937. He named his innovation, the “two-way radios.” Around the same time, Alfred Gross from America also invented his own version of walkie talkies. Their inventions supported the troops during World War II, and later, they went on to create several other inventions. While Alfred Gross invented pagers, Hings was busy developing new, improved radio, radar, and magnetic ground-surveying devices. Donald Hings also invented a device that could measure air pollution. invention

How to use walkie talkie

Walkie-talkies are easy to use and provide quick communication without the need for cellular networks. At least two people need to turn their device’s frequency to the same channel to communicate using walkie talkies. All walkie talkies are automatic receivers, but the transmitter can only be turned on only using a button. When people want to talk to others, they can turn on the transmitter, and everyone on the channel will be able to listen. Unlike the radios that pick up signal only from the radio station, walkie-talkies can create their own channel and create a two-way radio. The only drawback of walkie-talkies is that only one person can communicate on it at one time. So when you are speaking, the other person will only have to listen. If the other person hits the transmitter button, they will disconnect your signal and will not be able to listen to you.

Why are walkie talkies still useful

Walkie-talkies have always been robust devices that are easy to use and are also durable. They are also good for children who like to be adventurous and great for hikers to stay together. They can work even when smartphones are not useful. If you want to purchase a walkie talkie set, you can check out this guide to buying a walkie talkie. All security services use walkie talkies to stay connected to the entire team. They can also be available as different products, such as baby-monitor intercoms, that mothers can use to stay alert about their babies in the next room. However, walkie talkies are not useful for long-range communications no matter how much money you spend. They are also subjected to interference by other people who can eavesdrop on the communications if they tune to the same frequency.
Handheld Ham Radio

Handheld Ham Radio: What You Need to Know

When you are planning to purchase your first handheld ham radio, you must ensure that you have done your research to purchase a quality device. Handheld ham radios are a perfect solution to make communication when the phone lines are down. Ham radios are also called amateur radios and are often seen under the category of CB radios or walkie talkies. When you are not familiar with handheld ham radios’ features and technicality, shopping can become quite overwhelming. That is why you need to know what makes a handheld ham radio good for your required purpose. Here is what you should know about handheld ham radio before making a purchase.

Radio bands

If you need a handheld ham radio for emergency purposes, you need to find a model that offers a two-meter band. These models will allow you to communicate on 440 MHz. Know that you need to get a license from the Federal Communication Commission before you can have a ham radio. You can consider a dual-band radio to enable two frequencies at the same time. They are effective during communication and less static while listening. You can also find tri-band options, but it is not a necessity as dual-band can perform almost as well as tri-band. Tri-band radios are only useful if you need to cover bigger band models and also morse code signals.

Frequency range

You must also consider radiofrequency range while purchasing a handheld ham radio as they are made to cover only a limited range. The frequencies depend on what the FCC allows, but every model comes with different frequencies. Ensure that you get the right frequency model for which you are permitted to avoid any legal obligations. You can get a general, technician, and amateur extra license to access different frequency levels. You will also have to give an exam before you purchase a license.

Power

Power

Most ham radio models have 0.5W – 5W of power, while the heavy-duty models are designed for 1W-5W. The models with higher watt will have a better range. The higher watt models are also quite expensive, so you need to make sure why you need them. If you see “peak wattage” written on the pack, it means that it can take the max you can get. It also does not mean that higher wattage models cannot work with lower wattage models. A 2W ham radio can have a better consistency than 5W ham radio.

There are plenty of handheld ham radio models in the market. You can do personal research to find the best handheld ham radio on quality review websites. Simplify your process by checking for each feature one by one, instead of comparing all models at once. Also, know what you want so you can filter the models easily.

Locator Beacon

Personal Locator Beacon: What You Need to Know

A personal locator beacon is a device that alerts rescuers that an emergency and a critical man overboard (MOB) need immediate help. When PLB is activated, it sends out a signal to 406Mhz/121.5MHz frequency. It is a useful device for the advanced level hikers if they fall into helpless situations and need a third hand from the rescuers. It is a simple device and yet can be a life-saver. Here is what you need to know about a personal locator beacon before you purchase one.

PLB is not a satellite messenger

People may confuse PLB with satellite messengers like Spot or InReach. The satellite messengers are fancier and allow you to send messages to your home. PLBs are made specifically for only one function. It can only alert the rescuers about your critical state when you press the button. Instead of typing down the messages or choosing the already written messages that satellite messengers can provide, PLB will just scream out for rescue but in a much effective way than the messengers.

PLBs use COSPAS-SARSAT

PLBs are designed to function with the help of the intergovernmental satellite system COSPAS-SARSAT. The military runs the satellite for PLBs while the messengers like Spot and InReach use commercial satellites. When you need help, PLB will send an emergency signal at 406MHz, which is a specialized frequency only for this purpose. The Low Earth Orbit (LEO) satellite picks up your signal and uses the Doppler Shift to figure out your location. The High Earth Orbit (GEO) satellite can track every signal on earth. It will pick up the signal sent by PLB and alert the rescuers to locate you.

COSPAS-SARSAT

COSPAS-SARSAT started in 1972 to provide satellite to the US, USSR, France, and Canada. COSPAS-SARSAT was an agreement between Russia and the US for a maritime distress signal program. It was later expanded for airplanes and later for people who travel to extreme locations alone. COSPAS is the Russian language for Space System for the Search of Vessels in Distress. SARSAT is an acronym for Search and Rescue Satellite. Find out the best personal locator beacon for your next hiking trip and get help from the best rescue teams.

COSPAS-SARSAT

PLB alters the military

When you press the button on a PLB, it alerts the actual military radars. It is a relief in the tough times for people who see no other way to contact anyone at the times of no cellular network or commercial messengers. The signal goes to the Air Force Base in Virginia, and they immediately dispatch a team for rescue. They alert the nearest rescue team to your location to come and get you. You do not have to be in the US to get rescued. You can be anywhere, and PLB will provide immediate support from the local authorities to help you out.

Ham Radios

Mobile Ham Radios: What You Need to Know

Ham radios were invested in the early 20th century and were used to host local community reports and programs by hosts called “Ham.” If you have heard of ham radios before, you will know that these radio channels are not operated by big radio operators but by individuals. However, individuals must have a license and necessary ham equipment to run their channel. Today ham radios are also used for testing wireless communication and emergency communication. Even in the age of cellular networks, ham radios still remain a futuristic device. They can monitor two frequencies at the same time, which is a unique feature. Its latest application will be used in smart cars to talk to other drivers while driving. It can work without internet or cellphone and is compact enough to be carried in pockets. Ham radios can also be used to talk with people across the town and the astronauts at the ISS.

How does ham radios work

Best Ham radios

You are free to set up your own equipment for ham radio. It is commonly used by celebrities, doctors, truck drivers, politicians, and even students to deliver important information or to entertain. But before you purchase ham radios, you need to get a license to use them from the Federal Communication Commission. You will be allowed to work under fixed radio frequencies given by the FCC for use. The frequencies are also called bands used by operators to communicate around the world.

What are mobile ham radios

Today, there are different types of ham radio equipment available to be used by operators to communicate. Unlike the big models used in the past, the ham radios today are compact and lightweight. Hence they are called mobile ham radios.

Mobile ham radios are used in cars and bike helmets today to communicate with other people on the road. It can be a good way to stay connected on the roads where you do not find the cellular network. Here you can find the best mobile ham radios available in the market. A ham radio while driving can help you in emergencies and at the time of accidents. It can help you connect with the nearest hospital or repair shop without the need for a cellular network.

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How to get your own ham radio

When you plan on getting a license for ham radio, here are the necessary steps to follow. First, you need to apply for the Volunteer Examiner’s approval. Once you get approved there, you can move to the next stage to apply for an operator license. The license can be valid for ten years from the issued date and can be renewed online. You can get three types of licenses – technician class license, general class license, and amateur extra class license. Once you have the license, you can purchase your ham radio setup.

Facts

Ham Radios: What You Need to Know

Had radios are also known as amateur radios, and the person broadcasting is known as the “Ham.” Ham radios were built to test wireless communications that would later be used for socialization and emergency communication. The Ham radio was invented in the early 20th century and was used by amateur radio enthusiasts to create their own channels. In 1909, amateur radio channels became a thing, with 89 radio call stations used for ham radio. Today we have new modes of communication with cell phones and the internet, but ham radio is here to stay long.

What are ham radios exactly

Ham radio channels host shows of people who are known as “ham” or amateurs, even though they are not amateurs but are just independent channel hosts. Most ham radio operators have years of experience in hosting their show, so this hobby cannot be considered amateur. The term “amateur” in ham radio is used to refer to the designated radio frequencies used by the radio community. These radio frequencies are non-commercial bands that are reserved solely for enthusiasts. However, a ham radio must first get a license to operate on any frequency that gets aired.

Ham radio equipment

radio equipment

Ham radio equipment is easy to afford, but getting a license for it can get equally difficult. The ham radio equipment has changed over the years alongside the new technology. The voice over internet protocol (VoIP) introduced new ham equipment. If you want to become a ham radio operator, you must first decide the frequency and communication method you will use. Based on your requirements, you can pick different types of ham radio equipment. The ham radio equipment will include a radio and transceiver. You can add further components in your setups, such as cables, antennas, scanners, and receivers. Make wise decisions while choosing the equipment as they can become a significant investment. You can refer to this guide to buy a ham radio for your home.

How does ham radio work

working

The operators, aka amateur radio operators, need no experience as a radio jockey to host a show on ham radio. They can be people working daily at an office and use ham radio for their personal hobby. The license needs are issued by the Federal Communication Commission, which allows operators to work with radio frequencies. The ham radio transmits data to all directions, which can be received by other ham receivers. Ham radio is two-way communication, so the other person with the ham radio can also talk. The ham radios are able to operate above AM frequencies, and that region is called the microwave region. Hence, the ham radiofrequency is measured in the gigahertz range and is denoted with MHz. When you know how to create your own frequency, you can automatically establish communication with other ham radio users.

 

Wireless Communication

Types of Wireless Communication

Wireless communication has become a norm today but it was not so two decades ago. Mobile devices and computers use wireless data connections between their network nodes. You do not need complicated wiring systems today to connect your computer to the network. A wireless network allows you to access your data from any corner of the world today. This is due to digital modulation, adaptive modulation, access multiplexing, and information compression. As the distance between two devices increases, the network becomes even more complex. Here are the wireless communication systems that we use every day in general.

WPAN

Wireless Personal Area Network (WPAN) are used to connect two short-ranged devices. The routers that we use have the WPAN technology that connects them to the nearby devices. WPAN can cover a range of up to 30 feet and is usually applied only to home devices. WPAN network includes

Bluetooth – Bluetooth is a two-way communication system that is completely wireless. The two devices that want to connect can pair in simple steps but have to be close to each other. Blue tooth is used for file transfer and to connect devices like wireless headphones, mouses, keyboards to the main device.

Infrared – IR communication is also wireless

Infrared wireless communication is carried over infrared waves from one device to another. The infrared technology works with the electromagnetic spectrum. IR frequency is between microwaves and visible light ranges. It can transfer data only when the two devices are in the line of sight. There should be no obstacle in-between.

 

WLAN

Wireless Local Area Network (WLAN) can connect multiple devices to a single router through a wireless distribution. The devices connected to WLAN can cover a lot of range. It is used in homes and offices to keep the people connected.

WLAN

WiFi – Wi-Fi is a smart technology used for connecting computers wirelessly. It has a wired internet connection that uses a router. The router can connect with multiple devices that accept WiFi connections, such as smartphones, lap tools, and smartwatches. It can cover an office area and around 10-20 meters around the house.

WMAN

Wireless Metropolitan Area Network (WMAN) is a connection between metropolitan areas that consists of several other smaller networks. These smaller networks are also connected to wirelessly. This helps the big organizations stay connected to all their branches spread across the city.

WiMAX – WiMAX is a wireless broadband system that can deliver data at the speed of 30 megabits every second or even faster. WiMAX is also known today as the 4G wireless technology.

WWAN

Wireless Wide Area Network is used as a long-range wireless network. The cellular companies that provide internet and connectivity in all parts of the world use the WWAN. WWAN is maintained on a large scale basis for years. The WWAN networks use satellites at times to transmit the signals from the transmitter to the receiver.

Police scanners

Digital Police Scanners: What You Need to Know

Police scanners may not seem like an important gadget for you to learn about, but it is still one of the most important technologies. Police scanners are valued in every industry, agency, community, and public places. Police scanners are used commonly by law enforcement and other emergency services to connect to a common channel at a certain frequency to communicate the emergency.

The police scanners have seen a tremendous change in technology in the past few years. With the evolution of the communication system, the police scanners have also upgraded their technology, making them potent even today. There are plenty of range systems and other features included in police scanners today.

How does a police scanner work

Police scanners are similar to ham radios and work as a radio broadcasting device. The radio waves are transitioned into sound waves using a transistor. Police scanners are quite different from AM or FM radios. It can broadcast multiple receivers at the same time. However, police scanners cannot transmit on government channels as it is illegal. There are three modes available in a modern police scanner – scan mode, manual scan mode, and search mode.

Scan mode: The receiver will change the frequencies to find an ideal frequency that the sender transmits. The panel will display the frequency that the device is scanning.

Manual scan mode: The user can control the reiver to change the frequency to the required frequency using a button or a turn dial. This can help them quickly move to the desired frequency without the need for scanning unnecessarily.

Search mode: The receiver will search for a frequency within two predetermined sets of channels. It is useful when the scan mode is slow and does not know the right frequency.

Scan

Types of police scanners in the market

Police scanners are available in the market today, but all the scanners may not have all the features. However, all the police scanners must have standard technology.

Handheld scanners: These police scanners are portable and can be held in hand. They are useful for people who need to travel while using the scanner. These handheld models are extremely popular in the market. You can check this guide to find the best handheld police scanner.

Desktop: Desktop police scanners are bigger in size as they are build to cover a longer range. They have a wall-mounted output. It is not portable, but it can be installed in vehicles. These scanners have amazing pickup power and have several other built-in features.

Base/Mobile: These police scanners are the middle ground of desktop and handheld scanners. Since these are portable, they can be carried around. They can also be mounted and plugged into the wall. Those who are looking for portable wall-mounted scanners, desktop scanners, or handheld scanners can choose wisely between them based on what offers them the most convenience and features.

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