seems. Select a size code for a block, and then press Scan. Now listen to the communications. If you decide you are receiving most of the replies to the conversations with ID’s assigned to the block you just programmed, then you’ve probably selected the right size code and can work on the next block of the map.

Finally, for most public safety systems there are some size codes which are more common. S-3 and S-4 are probably the most common, followed by S-10, S-11, and S-12.

Size Code Restrictions

If you select size code S-12, S-13, or S-14, there are some restrictions as to which blocks can be used for these codes.

•S-12 can only be assigned to Blocks 0, 2, 4, or 6.

•S-13 can only be assigned to Blocks 0 and 4.

•S-14 can only be assigned to Block 0.

Since these size codes require multiple blocks, you will be prompted for the next available block when programming a fleet map. For example, if you assign Block 0 as an S-12, you will be prompted for b2, the next block available, instead of b1. And if you assign Block 0 as an S-14, you would not see another prompt because it uses all available blocks.

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Uniden BCT15 manual Size Code Restrictions
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BCT15 specifications

The Uniden BCT15 is a highly regarded mobile scanner designed specifically for enthusiasts of radio communications. This versatile scanner is equipped with advanced technologies and features, making it a popular choice among both amateur and professional users looking to keep up with various frequencies and radio transmissions.

One of the most notable features of the BCT15 is its ability to scan analog and digital frequencies, which allows users to access a wide range of communications, including police, fire stations, amateur radio operators, and even aircraft communications. The scanner supports both conventional and trunked systems, providing flexibility in monitoring different types of radio signals.

The BCT15 has a frequency range that spans from 25 MHz to 1300 MHz, which ensures users can capture a diverse selection of channels. It features an advanced microprocessor that provides fast scanning capabilities, with the ability to scan up to 30 channels per second. Additionally, the built-in 1000 channel memory allows users to store a substantial amount of frequencies, enabling seamless access to frequently used channels without the need for constant reprogramming.

One of the standout technologies included in the Uniden BCT15 is the Close Call RF Capture Technology. This feature allows the scanner to detect and instantly tune into nearby frequencies that are in use, providing a real-time listening experience. This is particularly useful in dynamic environments where new signals may frequently emerge.

The BCT15 also comes equipped with Easy-to-Program memories, making it user-friendly for those who may not be as tech-savvy. Users can also utilize the built-in search features to identify active frequencies within a specific range, which is invaluable when exploring new channels or areas. The backlit display and intuitive interface further enhance the user experience, allowing for easy navigation even in low-light conditions.

Furthermore, the scanner includes a programmable scan delay, a priority channel feature, and weather band capabilities. This allows users to stay informed about local weather conditions, an essential feature for anyone who enjoys outdoor activities.

Overall, the Uniden BCT15 is a powerful and user-friendly scanner that combines innovative technology with practical features. Whether for hobbyists or professionals, its extensive capabilities cater to a broad audience interested in the world of radio communications. With its solid performance, ease of use, and comprehensive features, the BCT15 remains a top choice for scanner enthusiasts.
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