Beyond the Basics
glossary
Channels – programmable memory locations for frequencies you want to monitor. Each time the scanner finds an active frequency, it stops and monitors radio traffic on that channel until the transmission ends. It then resumes scanning.
Channel-Storage Bank – storage area for a group of channels. Channels are storage locations for frequencies. You can scan the channel-storage banks to see if there is activity on frequencies stored there. Whereas a channel can only contain one frequency, a channel storage bank can hold up to 50 channels. To make it easier to identify and select the channels you want to listen to, your scanner divides the channels into 10 banks (0 to 9) of 50
(00 to 49) channels each, for a total of 500 channels. You can use each channel-storage bank to group frequencies, such as those used by different public safety agencies and jurisdictions in your area. Channel storage banks can easily be enabled or disabled while scanning by pressing the number key that corresponds to the desired channel storage bank.
Digital Operation – Your scanner is equipped with advanced Digital Signal Processing circuitry to receive and decode Phase 1 APCO-25 C4FM (four level FM) digital voice transmissions. This section of the manual will help you understand the differences between traditional analog and digital modulation. For ease of use, your scanner is designed to automatically detect digital modulation on any conventional channel programmed for FM/Digital (FM) modulation. It is not necessary to configure individual channels for digital operation. Many digital trunked radio systems are actually mixed mode systems that support both analog and digital modulation. Certain user groups on these systems may use analog modulation, while others use digital modulation. Your scanner will automatically detect the type of modulation being used and switch to the correct modulation mode without special programming or user intervention. Your scanner also features Intelligent Adaptive Digital Tracking for optimal reception of digital signals from a variety of digital conventional and trunked radio system types. No special sound quality settings or adjustments are needed for different C4FM sytem types. Digital modulation represents a breakthrough in
