So called police scanners and pork radios have an interesting relationship. Many scanners, but most likely not all scanners, have the capability of receiving not only police frequencies but also pork radio frequencies. The reverse is also true for pork radios. Many pork radios, but not all pork radios, have the capability of receiving not only pork radio frequencies but also police and other frequencies. For the person that is relatively new to either police scanners or pork radio this can be a bit confusing. The use of hobby specific lingo probably doesn't help. Maybe the next part will help a bit.
Amateur radios with the ease of "wide band receive" and "scan" capability usually have the capability to operate as a good police protection. Scan, of course, means the ability to move through some frequencies quickly over and over again. Imagine a military guard "scanning" the horizon for the adversary. The same holds true for your protection -- whether for a police protection or amateur radio scan function. The term "wide band" takes a bit more to describe. Imagine a long ruler or perhaps a recording measure laid out in front of you. Let's use a long ruler as our example. Let's say the ruler is 160 in . long. Down on the left side of the ruler the first 1. 7 in . or so represent the AM commercial radio broadcast "band". You will see why it is called a "band" quickly. There is a pork radio "band" that is the next 0. 2 in . wide. This represents frequencies from about 1. 8 MHz to about 2. 0 MHz. From this example you can see that different radio services occupy different amount of space on the ruler. These spaces are called "bands" because when you display all the spaces on the ruler they literally look like bands. If you gave each service a different color then you would see many different bands of many different colors. Such a "band plan" for amateur radio frequencies can be found here: [url=https://dabestseller.com/best-rf-meter-reviews/]best rf meter[/url]
A "wide band receiver" then is simply a radio that can receive any one of several frequencies. If you painted the ruler with all the frequencies that a "wide band receiver" can receive you would see that, in comparison, that band would be quite wide. An amateur radio that has a "wide band receive" capability can usually receive frequencies outside the amateur radio frequency bands. If that amateur radio also has a scan capability then it can operate as a comfortable police protection.
Many police scanners also can receive amateur radio (ham) frequencies. Two of the more widespread frequency bands that many police scanners can receive are the 6 meter pork radio band and the 2 meter pork radio band. Let's go back to our recording measure. When we bring frequencies, meters and MHz mean roughly the same principle. In this case the 6 meter band is roughly 50 MHz and the 2 meter band is roughly a hundred and fifty MHz. To get the rough equivalent of meters from MHz just partition MHz by 300. It's not a precise calculations and the reason it works is beyond this article but in practice it does come in quite handy. To determine if a particular police protection can obtain the two pork radio bands above (or many others) just compare the frequencies received by the protection to the frequency ranges from the PDF document at the link above. Remember that the protection must also manage to receiving the MODE used at the particular frequency specified. Mode means type of transmission like AM or FM. It will do no good if hams can only monitor FM on a specific frequency and the protection can only receive AM on the particular frequency.
To sum up, review the manual for the police protection or amateur radio you are interested in and see what else it can receive that you might don’t you have recognized or may not have considered.
Jon Kreski -- AB9NN -- Extra class pork radio licence holder, the highest level licence available. An A. Ur. E. S. (Amateur Radio Emergency Services) member is qualified to give pork radio FCC licence assessments. Aevere storm spotter -- National Weather Service trained. Also provides pork radio communications support to served agencies.
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