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20-520.fm Page 8 Wednesday, August 4, 1999 3:06 PM

PREPARATION

POWER SOURCES

You can power your scanner from any of three sources:

Built-in rechargeable battery pack

Standard AC power using the supplied AC adapter/ charger

Vehicle battery power using an optional DC ciga- rette-lighter power cable

Using the Rechargeable Battery Pack

You must charge your scanner’s built-in rechargeable battery pack before you can use it to power the scanner. Your scanner has a built-in charging circuit that lets you charge the rechargeable battery pack while it is in the scanner.

To charge the battery pack, simply connect the supplied AC adapter/charger or an optional DC cigarette-lighter

power cable to the scanner’s jack. See “Using Standard AC Power” on Page 9 or “Using Vehicle Bat- tery Power” on Page 10.

It takes about 14–16 hours to recharge a battery pack that is fully discharged. (You can operate the scanner while recharging the battery pack, but charging takes longer).

Notes:

The scanner automatically stops charging the bat- tery pack when it is fully charged, even if the sup- plied AC adapter/charger or a DC cigarette-lighter power cable is still connected to the scanner.

A rechargeable battery pack lasts longer and deliv- ers more power if you occasionally let it fully dis- charge. To do this, simply use the scanner until the low battery indicator appears. Then fully charge the battery pack.

If the battery pack doesn’t power the scanner even after you charge it, you must replace it. You can order a re- placement battery pack from your local RadioShack store.

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Radio Shack PRO-90 owner manual Preparation, Power Sources, Using the Rechargeable Battery Pack

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.