General Amateur Radio Articles

The history of the police scanner goes clear back to the early 1930’s. The police would broadcast through a local AM radio Station. Anyone with a radio could hear the calls. A conventional radio system is basically full of frequencies. Frequencies are the channels of communication. To hear transmissions you must program certain channels into the scanner. The first type of police scanners were crystal controlled with about four channels. To listen you would have to have a quartz-crystal tuned to that frequency and plugged into an internal slot. Each of those crystals would cost around $7.00 and eventually become […]

The History of Police Scanners

This one is emotional, of course. After all, AM radio is one of the very oldest uses of the radio spectrum (beginning ~1919), as evidenced in part by the Medium Frequency band on which it began and still operates. There isn’t much other remaining on-air activity that predates it on the spectrum, perhaps just the Maritime Service, a few Public Coastal stations (overseas telegrams), and the Amateurs. AM broadcasting is one of Mother Spectrum’s first children, and it will be sad to see it go. But it should go. It’s been operating essentially unchanged through a turbulent period in the […]

The Health and Future of AM Broadcasting?

If you’ve been bitten by the radio ‘bug’ and enjoy using a CB radio why not move up to something with a little more range and power? The ten meter waveband occupies the 28 to 29.7 MHz section of the electromagnetic spectrum and has many of the same characteristics as the 11 meter CB waveband, but there are some significant advantages to its use. 1. More power. One thing I love about ten meter radios is the fact that they have a lot more power than their Cb cousins. More power typically translates to more range and better reception. 2. […]

Ten Things to Love About 10 Meter Radio

A Marine VHF radio is a must for ships and vessels of all sizes. A VHF radio is a type of communication device which has trans-receiving capabilities and can help in getting rescue services in case of trouble in the sea. As the name suggests, a Marine VHF use radio waves for communication, typically in the range of 156 to 174 MHz. Most VHF units which are available in the market today can operate in different channels. There are some basic channels and frequencies which are a standard worldwide like the 156.8 MHz channel which is the distress channel. Marine […]

The Importance of Marine VHF Radios

Radio is one of the oldest means of communication and it is used by the people even now. There are many people around the world who use the radio now. In a radio certain frequencies has to be set so that you can listen to the station. But there are some people who hack the frequencies with the help of the radio scanner frequencies. This hacking is mainly done by the deceitful people. The radio frequencies are also used for providing the people with many types of information and news and many more. There are many radio users in the […]

Radio Scanner Frequencies – The Popular Ones

While shortwave radio reached its peak of popularity a couple of decades ago during the World Wars, many people still enjoy it today as a hobby (which can also be useful in emergencies). Access to a shortwave radio, particularly in combination with knowledge of Morse Code can provide the opportunity to be connected to almost any foreign language and world-wide news. But shortwave radio has another dimension than what you can find through online newspapers or the 6-o’clock news. HAM radio operators and shortwave radios also give the user and listener the ability to communicate with other ordinary citizens, to […]

Why Shortwave Radio and Morse Code?

1. Cost: Hobbies can get as expensive as we let them. Shortwave radio listening is not as popular in the United States as it is in many other parts of the world. In all honesty, at times the prices of shortwave receiver sets in the United States can seem a little steep for what you are actually buying. This might be due at least in part to the fact that a good portion of amateur and shortwave radio dealers in the United States tend to rely on government purchases for revenue. Even so, choosing a good shortwave receiver to be […]

5 Things to Consider When Buying a Shortwave Radio

Radio wave propagation is a very complex process. It is impossible to precisely predict how waves will spread and what values we will measure at some particular point. Therefore we have some mathematical models to approximate radio propagation and to calculate field strength values according to predefined probability. The propagation model, which is based on electromagnetic theory and on statistical analysis of both terrain features and radio measurements, predicts the median attenuation of the radio signal as a function of distance and the variability of the signal in time and in space. Propagation models define curves and formulas. With such […]

Radio Mobile – Free Radio Planning Software

A very common question we hear regarding 2 way radios is “How far will they work?” Unfortunately, this is a little like the old “how long is a piece of string?” question. A large number of factors affect the range of two way radios. Transmit power, antenna efficiency, user height above ground and surrounding terrain are just some of these factors to take into account. The only practical comparison which we can make is in a mythical “ideal” situation, flat ground with no obstructions. As the most popular 2 way radio systems are the simplex, hand portable type, we’ll discuss […]

Two Way Radios, How Far Do They Work?

This past weekend I was experimenting with a free product called Log Me In from Log Me In is simple to set up and the only requirement for a download of the free software is to create a general user account. No specific information is required except a user name, password and email address. Specific information is of course required to purchase the rather pricey “PRO” version. One caveat, be sure to download and install the free version, otherwise you will see that you will be running the “free 90 day PRO trial”. If this happens to you, log […]

Experimenting With Remote Control of Amateur Radio Equipment and Software