So-called police scanners and ham radio have interesting relationship with each other. There are many scanners, but probably not all scanners are able to receive not only radio frequencies, but also ham radio frequencies. The reverse is true for ham radio. Many ham radio, but not all fake radio, are able to receive not only radio frequency jams but also police and other frequencies. A person who is relatively new to police scanners or ham radio may be a bit confusing. Using a hobby specific language will probably not help. Perhaps the next paragraph will help you a little.
Amateur radios "broadband" and "scanning" are generally capable of working as a very good police scanner. Scanning, of course, means that you can quickly and quickly move over the frequency range. Imagine a military guard "scans" the enemy's horizon. The same is true for your scanner – whether it's a police scanner or an amateur radio scan feature. The term "broad band" describes a little more. Imagine a long ruler or maybe a ribbon size set up in front of you. Use the long ruler as an example. Suppose the ruler is 160 inches long. On the left side of the ruler is the "1.7 bar", the "band" of the AM commercial radio program. You will find why a "band" is soon to be called. There is a ham radio "band", which is the next 0.2 inches wide. This means frequencies between 1.8 MHz and 2.0 MHz. From this example, we can see that different radio services occupy a different size in the ruler. These spaces are called "bands" because when they show all the lines in the ruler they literally look like bands. If you give each feature in a different color, you can see a variety of different colors. Such amateur radio frequencies can be found here:
A "broadband receiver" is therefore simply a receiver that is capable of receiving any of the frequencies. If you painted the ruler with all the frequencies that will be received by a "broadband receiver", you will notice that this band will be quite broad in comparison. Amateur radio with broadband reception usually receives frequencies other than amateur radio frequencies. If this amateur radio has a scanning capability, it can be a very nice police scanner
Many police scanners can also get amateur radio (ham) frequencies. There are two more frequent frequency bands that many police scanners can get: the 6-meter ham radio and the 2-meter ham radio tape. Let's go back to the measuring tape. When talking about frequencies, meters and mhz are about the same. In this case, the 6-meter band is about 50 MHz and the 2-meter band is about 150 MHz. To get the meter rectangle equal to MHz, just divide the MHz by 300. This is not an accurate calculation, and the reason that works is beyond this article, but in practice it is very practical. To find out whether a given police scanner will receive the two radio frequencies (or many others), just compare the scanned frequencies with the frequency ranges of the PDF document shown above. Note that the scanner must be able to receive the MODE used at the specified frequency. The mode is the transfer mode, such as AM or FM. It will not be good if the hams can transmit FM only at a given frequency and the scanner can only receive AM at that frequency.
In summary, review the manual of a police scanner or amateur radio and see if you may not know or ignore it.
Source by sbobet