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Note: To review the bank currently in use, press DATA while in the trunk tracking mode. The bar for the selected bank flashes at the top of the display for about 5 seconds.

3.To return to non-trunked scanning, press TRUNK again.

Hint: While scanning, you will not know exactly who the ID's are assigned to until you listen awhile or until you lo- cate ID lists in frequency guides or on internet sites such as www.trunkscanner.com. Within a few minutes, you can usually figure out if what you are listening to is a po- lice, fire, or emergency medical 2-way radio user. Other IDs might take some time, but determining who each ID represents is half the fun of trunk tracking!

Monitoring an Active ID

When the scanner stops on a transmission, you can hold the scanner on that transmission.

1.Press HOLD. HOLD appears, the scanner stays on the current ID, and the channel number changes.

2.If you want to listen to a different ID, use the number keys to enter the ID you want to hold.

3.Press HOLD again. HOLD flashes and the scanner monitors that ID.

4.When you want to stop the hold and resume search- ing for a data channel so you can continue trunk tracking, press SRCH.

Note: You can also follow these steps to hold on an ID while scanning a scan list. See “Scan Lists” on Page 41.

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Radio Shack PRO-90 owner manual Monitoring an Active ID
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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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