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SETTING SQUELCH FOR THE TRUNK TRACKING MODE

Your scanner’s squelch setting is automatically adjust- ed during trunk tracking, which means it is not neces- sary to manually adjust squelch while tracking trunked transmissions. However, the squelch setting can affect how fast your scanner acquires the data channel, and, in some instances, can prevent your scanner from ac- quiring the data channel at all.

We recommend you set SQUELCH to this position before selecting a trunked bank.

Note: You can change this setting, if necessary, to pro- vide better performance in your area.

STORING TRUNKED

FREQUENCIES

Before you set up your scanner to track a trunked sys- tem, consider the following:

•Valid trunked system frequencies range from 851.0000–868.9875 in 12.5 kHz steps.

•You can use any of your scanner’s banks as either a trunk tracking bank or conventional scanning bank, but you cannot mix the two.

•The scanner only scans one trunked system at a time. Although you can store frequencies for more than one trunked system in one of your scanner’s banks, the scanner only scans the frequencies associated with the first data channel it finds.

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Radio Shack PRO-91 owner manual Setting Squelch for the Trunk Tracking Mode, Storing Trunked Frequencies
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PRO-91 specifications

The Radio Shack PRO-91 is a handheld scanner that appeals to both amateur radio enthusiasts and professionals seeking a reliable and versatile communication device. Known for its user-friendly design and wide range of features, the PRO-91 is an excellent choice for monitoring various frequencies, including VHF and UHF bands.

One of the standout features of the PRO-91 is its capability to scan frequencies in the 25-1300 MHz range, which allows users to listen in on a variety of communications. This includes police, fire, and emergency services, as well as amateur radio transmissions and aircraft communications. The scanner supports both analog and some digital formats, making it adaptable to different communication standards and ensuring users stay updated with relevant broadcasts.

The PRO-91 comes with 200 programmable channels, allowing users to store their favorite frequencies for quick access. It also features a million frequency search capability, enabling it to detect active signals within the scanning range. Additionally, the scanner includes a priority channel function, permitting users to designate a specific frequency to continuously monitor while scanning through other channels.

Another notable characteristic of the PRO-91 is its triple conversion design, which enhances sensitivity and selectivity, resulting in improved audio clarity and reduced interference. The unit is equipped with a robust speaker that delivers clear sound quality, making it easy to understand transmissions even in noisy environments.

Users will appreciate the ergonomic design of the PRO-91, which features intuitive controls and a backlit LCD display for easy visibility, even in low-light conditions. The keypad layout is designed for straightforward operation, allowing even novice users to navigate through menus and settings with ease.

The PRO-91 is powered by a rechargeable battery, offering extended usage without the need for constant battery replacements. Its compact and lightweight construction makes it portable, making it suitable for on-the-go monitoring.

In conclusion, the Radio Shack PRO-91 offers an impressive array of features, technologies, and characteristics that cater to diverse scanning needs. With its wide frequency range, programmable channels, and superior audio quality, it stands out as a reliable choice for anyone looking to explore the world of radio communication. Whether for recreational use or professional monitoring, the PRO-91 ensures users remain connected to the signals that matter most.
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