Press PRIORITY to turn on priority scanning.

Note: Priority scanning does not work if the ID is locked out.

SCANNING TYPE I AND HYBRID TRUNKED SYSTEMS

Your PRO-2052 is set to scan Type II user IDs by default. When you scan trunked frequencies, each Type II user ID you see appears as an even num- ber without a dash (such as 2160). Your PRO-2052 can also scan Type I trunked systems. Each Type I ID ap- pears as a three- or four-digit number, followed by a hyphen, followed by a one- or two-digit number (such as 200-14).

If you notice a mix of odd- and even- user IDs (such as 6477, 2160, 6481, 6144, and 1167), then you are proba- bly monitoring either a Type I or hybrid (a combination of Type I and Type II user IDs) system. (See “Types of Trunking Systems” on Page 30).

You might also notice that you are missing responses when you hold on an active ID. Unlike Type II systems, Type I and hybrid systems require a fleet map that sets specific fleet- subfleet parameters. It is easy to se- lect a fleet map to scan; what is not al- ways easy is selecting or program- ming a map that is being used in your particular area.

When a Type I system is designed, the address information for all its user IDs is divided into 8 equal-size blocks, numbered 0–7, and each block is as- signed a size code. When you set up your scanner to track a Type I system, you must choose a size code for each block. When you have chosen a size code for all 8 blocks, you will have du- plicated the fleet map for the system you are tracking. If you have chosen correctly, you will be able to track transmissions in that system.

Each size code defines the number of fleets, subfleets, and IDs each block has. For example, you can see in the following table that a size code of S4 has one fleet, which is divided into 16 separate subfleets, and it has a total of 512 individual IDs.

Size

Fleets

Sub-

IDs

Block

 

 

fleets

 

Used

 

 

 

 

 

 

 

S0

Reserved block for Type II IDs

 

 

 

 

 

S1

128

4

16

1

 

 

 

 

 

S2

16

8

64

1

 

 

 

 

 

S3

8

8

128

1

 

 

 

 

 

S4

1

16

512

1

 

 

 

 

 

S5

64

4

32

1

 

 

 

 

 

S6

32

8

32

1

 

 

 

 

 

S7

32

4

64

1

 

 

 

 

 

S8

16

4

128

1

Size

Fleets

Sub-

IDs

Block

 

 

fleets

 

Used

 

 

 

 

 

 

 

 

 

 

S9

8

4

256

1

 

 

 

 

 

S10

4

8

256

1

40

Page 39 Page 41
Page 40
Image 40
Radio Shack PRO-2052 owner manual Scanning Type I and Hybrid Trunked Systems, Size Fleets Sub IDs Block Used
Page 39 Page 41

PRO-2052 specifications

The Radio Shack PRO-2052 is a versatile and feature-rich scanner that has captured the attention of amateur radio enthusiasts and professionals alike. This desktop scanner is designed to receive a wide array of frequencies across various bands, making it a valuable tool for monitoring communications.

One of the standout features of the PRO-2052 is its ability to monitor VHF, UHF, and some trunked radio systems. It boasts a wide frequency coverage range from 25 MHz to 1.3 GHz, covering conventional FM, AM, and even the digital communications that have become increasingly popular. This extensive coverage ensures that users can receive a plethora of broadcasts, from local police and fire departments to amateur radio operators and public service communications.

Another significant feature is the scanner's memory capacity, which allows users to store up to 300 channels. This capability is particularly beneficial for those who frequently listen to multiple frequencies, as it provides the flexibility to switch between channels seamlessly. The scanner also supports the ability to organize channels into banks, making it even easier to manage multiple frequencies.

The PRO-2052 comes equipped with a variety of scanning modes, including Narrowband and Wideband scanning, which cater to different listening preferences and needs. Users can employ the Delay function that pauses scanning for a brief period after a transmission is detected, ensuring that they don’t miss any important information. Furthermore, the Priority Scan feature enables monitoring of a selected channel while still continuously scanning other frequencies, adding another layer of functionality.

In terms of usability, the PRO-2052 is designed with a clear and intuitive interface, featuring a backlit LCD that makes it easy to read in various lighting conditions. Its control panel is user-friendly with dedicated keys for commonly used functions, allowing both beginners and seasoned professionals to operate the device with ease.

Furthermore, the scanner has built-in weather alert capabilities, offering users prompt notifications about severe weather conditions, ensuring safety and preparedness. The PRO-2052 is powered either by an AC adapter or batteries, providing the flexibility to operate in various environments.

In summary, the Radio Shack PRO-2052 is a powerful and user-friendly scanner that offers a rich set of features, making it a top choice for those interested in radio communications. Its extensive frequency range, substantial memory capacity, and multiple scanning modes make it suitable for a wide variety of applications, proving to be a reliable companion for enthusiasts and professional users alike.
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