systems, you must select or program a fleet map with the same size code assignments as the trunked system. If you do this accurately, you will track all the fleet and

subfleet combinations used by the system. In other words, you will hear complete communications while monitoring a trunked system.

Note: Preset fleet maps might be available at www.trunkscanner.com.

If you do not already know the size codes used, you will have to guess them. But since you do not have to figure out all the blocks at once, this is not as hard as it seems. Select a size code for a block, then press SRCH. Now lis- ten to the communications. If you decide you are receiv- ing most of the replies to the conversations with IDs assigned to the block you just programmed, then you have probably selected the right size code and can work on the next block of the map.

There are 16 preset fleet maps to choose from, and it is best to start with these when setting up a Type I or hy- brid trunk tracking bank. If none of the following preset fleet maps allow you to follow complete conversations, then you probably need to program your own fleet map (see “Programming a Fleet Map” on Page 49).

E1P1

E1P2

E1P3

 

 

 

 

 

 

 

 

 

 

 

 

Block

Size

Block

Size

Block

Size

 

Code

 

Code

 

Code

 

 

 

 

 

 

 

 

 

 

 

 

0

S11

0

S4

0

S4

 

 

 

 

 

 

1

S11

1

S4

1

S4

 

 

 

 

 

 

2

S11

2

S4

2

S4

 

 

 

 

 

 

3

S11

3

S4

3

S4

 

 

 

 

 

 

4

S11

4

S4

4

S4

 

 

 

 

 

 

5

S11

5

S4

5

S4

 

 

 

 

 

 

6

S11

6

S4

6

S12

 

 

 

 

 

 

7

S11

7

S4

7

---

 

 

 

 

 

 

E1P4

E1P5

E1P6

 

 

 

 

 

 

 

 

 

 

 

 

Block

Size

Block

Size

Block

Size

 

Code

 

Code

 

Code

 

 

 

 

 

 

 

 

 

 

 

 

0

S12

0

S4

0

S3

 

 

 

 

 

 

46

Page 45 Page 47
Page 46
Image 46
Radio Shack PRO-90 owner manual E1P1 E1P2 E1P3 Block Size Code, E1P4 E1P5 E1P6 Block Size Code S12
Page 45 Page 47

PRO-90 specifications

The Radio Shack PRO-90 is a compact yet powerful handheld scanner that has garnered attention from both hobbyists and serious enthusiasts of radio communications. Introduced as a versatile scanner, the PRO-90 is designed for ease of use while providing a myriad of features that enhance the scanning experience.

One of the key characteristics of the PRO-90 is its advanced scanning technology. The unit boasts a 100-channel memory, allowing users to store and quickly access frequently used frequencies. The scanner supports a wide range of frequency bands, making it suitable for monitoring everything from police and fire frequencies to aviation and marine channels. With programmable scanning capabilities, users can effortlessly create their own scanning routines tailored to their interests.

The PRO-90 also features a fast scanning rate, with the ability to scan across frequencies at remarkable speeds. This minimizes the wait time for users who want to listen to different bands or channels, ensuring they never miss critical transmissions. Additionally, the scanner includes a dedicated "Hold" function that allows users to temporarily pause on a specific frequency for extended listening.

In terms of ease of use, the PRO-90 is designed with an intuitive interface. The scanner includes a backlit LCD display, making it easy to read in low-light environments. The keypad is arranged logically, enabling quick access to functions such as volume, squelch, and memory management. Users can also program the scanner via PC, thanks to its compatibility with programming software, making it easier to manage and transfer frequency lists.

Another standout feature of the PRO-90 is its ability to decode various digital signals. This includes some types of Motorola, GE, and other digital technologies, which are commonly used in modern communications. This capability extends its usefulness beyond traditional analog signals, making the scanner relevant in today’s digital landscape.

Moreover, the Radio Shack PRO-90 is designed with portability in mind. Its compact size and lightweight construction make it an ideal companion for outdoor activities, road trips, or simply enjoying the local communications landscape. Whether you’re a seasoned radio enthusiast or a newcomer to the field, the PRO-90 provides a rich set of features, advanced technology, and user-oriented design that enhance the scanning experience. It stands out as a worthy tool for anyone looking to immerse themselves in the world of radio communication.
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