each group operates on...and this frequency selection is made each time a user transmits. So, while on a conventional system queries, replies, and follow-ups are all on a single frequency, they could each be on completely different frequencies on a trunked system. This semi-random frequency assignment made monitoring such a system impossible prior to Uniden’s invention of the TrunkTracker scanner.

Not only does your UBCD396T scan channels like a conventional scanner, it actually follows the users of a trunked radio system. Once you know a talk group’s ID, you won’t miss any of the action.

If you are a new scanner enthusiast, you might want to read the first part of this manual and use your scanner in conventional mode before you begin trunk tracking. Understanding scanning fundamentals and terminology will make trunk tracking much easier. If you are already an experienced scanner operator, you might want to go to “Programming Motorola Systems” on Page 59, “Programming EDACS Systems” on Page 63, or “Programming LTR Systems” on Page 66 now.

Types of Trunking Systems

Trunking systems divide a few frequencies among many different users, but the way that each system does this is slightly different. This section describes some of the technical data behind Motorola, EDACS, and LTR trunked radio systems.

Motorola Trunking

While there are different types of Motorola trunking systems, they all use the same basic trunking method. The system consists of one control channel (or as many as 4 per system but only one is active at any one time), plus one or more voice channels (typically 10, 20, or 28 total channels). When a user presses Push To Talk (PTT) to transmit, their radio first sends their talk group information to the control channel.

Understanding Scanning

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Uniden UBCD396T owner manual Types of Trunking Systems, Motorola Trunking

UBCD396T specifications

The Uniden UBCD396T is a highly versatile and compact digital scanner that has gained a reputation among enthusiasts and professionals alike for its impressive features and capabilities. Designed primarily for public safety scanning, this portable scanner allows users to stay informed about local emergency services, including police, fire, and medical operations.

One of the key features of the UBCD396T is its ability to receive a wide range of frequencies. It covers VHF, UHF, and 700/800 MHz bands, which are commonly used by various agencies. With support for both analog and digital modes, users can enjoy clear audio and access to multiple communication protocols.

The scanner is equipped with Uniden's advanced APCO-25 digital decoding technology, enabling it to receive and accurately decode P25 digital signals. This is particularly beneficial for users in areas where digital trunking systems are in use, ensuring they can access critical communications without the hassle of missing important information.

A standout characteristic of the UBCD396T is its Dynamic Memory Management system, which allows users to create and manage multiple scanning banks efficiently. With 1000 channels and the ability to store additional frequencies, users can customize their scanning experience based on their preferences and needs. The scanner also supports GPS connectivity, enabling location-based scanning that automatically alters the frequency range based on the user's position.

Another notable feature is the scanner's customizable display and backlight options. Users can adjust the brightness and color settings to suit their preferences, making it easy to operate even in low-light conditions. The UBCD396T also boasts a built-in rechargeable battery, providing hours of continuous operation, ideal for users on the go.

Furthermore, the UBCD396T includes features such as a dedicated search mode, allowing users to scan unprogrammed frequencies, and a close call function that detects nearby transmissions instantly. The USB connectivity enables easy software updates, ensuring users can keep their devices up to date with the latest technologies.

In summary, the Uniden UBCD396T is a powerful and flexible digital scanner that offers a suite of features suited for both casual users and serious enthusiasts. Its ability to decode various communication types, along with user-friendly customization options, makes it a standout choice for anyone looking to stay connected to the world around them.