Analog frequencies for scanners
Note: Receivers - Receivers are not normally considered scanners, they may be able to scan, indeed some are very good at it however, receivers are typically used to cover sections of the RF (Radio Frequency) Spectrum in finer detail.Scanners are available to work with all of these types of systems, but not all scanners can receive all types. The most common trunking system types are: All trunk tracking scanners are also conventional scanners. See the Trunking Basics article for an overview of how trunking works. Conventional scanners are not capable of properly following trunked conversations (see next topic.)Ī trunk-tracking scanner is designed to allow the programming of a set of frequencies that are used among several channels or agencies on a shared basis. Scanners are roughly divided into two types:Ī conventional scanner is designed to follow sets of discrete frequencies, each one carrying separate types of conversations. In most cases there is usually a hand held model that is the sister to the mobile/base model typically in this case the radios are exactly the same, the only difference being the case and the size of the speaker inside the radio. Most of these base class of scanners are really mobile scanners that use a 12 volt "wall wart" power supply to supply the needed power. These are scanners designed to operate from vehicle power (usually a nominal 12 volts DC) or in the case of Base Only scanners, from house power. Most experienced scanner users carry extra batteries with them and also do not recharge the batteries in the radio but use some sort of external battery charger. Several hand held scanners do use rechargeable batteries and usually include a recharging circuit in the radio to recharge the batteries. These are battery powered and are of course therefore limited in the amount of time they may be used before the battery power is diminished.
ANALOG FREQUENCIES FOR SCANNERS PORTABLE
These are portable scanners, designed to be carried around by hand, clipped to your belt, or in some cases slipped into your pocket. Scanners come in two basic configurations: You must keep these in mind when deciding on your needs and considering your purchase. To help you make your decision as to what type or model of scanner you need, we have to define some common terms used in the scanning community. In addition some hobbyist radios are not really scanners but they may scan for example an amateur radio transceiver may be able to scan, but that is not its prime function. All scanners share some common characteristics, they are all radios and they are designed to scan a set of frequencies however, each scanner model is different from other scanner models.They can be used for monitoring business activities, Family Radio Service (FRS), Citizens Band (CB), etc. Scanners are typically used for monitoring Public Safety communications such as Fire, Police, Medical services, etc.It is a frequency agile radio that will allow you to program in various radio frequencies and then it will scan those frequencies looking for activity allowing you to listen to that activity.