Free Guide to RadioShack Pro 668 Scanner Programming

Understanding the RadioShack Pro 668 Scanner Basics

The RadioShack Pro 668 is a handheld scanner radio that has been used by enthusiasts, emergency responders, and radio hobbyists since its release. This device allows users to monitor various radio frequencies across different bands, including VHF (Very High Frequency) and UHF (Ultra High Frequency) ranges. The scanner can receive transmissions from police departments, fire departments, emergency services, amateur radio operators, and other licensed radio users. Understanding the fundamental components and capabilities of this scanner is the first step toward programming it effectively.

The Pro 668 operates using a digital tuning system, which means users manually enter frequencies rather than turning a dial. The device has a relatively compact design, measuring approximately 5.5 inches tall, making it portable for field monitoring. The scanner includes a built-in speaker, an antenna connector, and a battery compartment. Most models operate on eight AA batteries, though AC adapter options are available. The display screen shows the current frequency, mode, and other operational details in a format that becomes intuitive after basic familiarization.

The scanner's memory capacity is another important feature. The Pro 668 can store up to 200 frequencies across ten separate banks or channels. This organization system allows users to group related frequencies together logically. For example, one bank might contain all local police frequencies, while another contains fire department communications. This organizational structure helps users navigate their programmed frequencies more efficiently during monitoring sessions.

The device operates in different modes depending on the type of transmission being monitored. The primary modes include FM (Frequency Modulation) for most public safety and commercial communications, and AM (Amplitude Modulation) for some specialized frequencies. Understanding which mode corresponds to specific frequencies in your area is essential for successful programming. Incorrect mode selection will result in no audio or severely distorted reception.

Practical takeaway: Before beginning any programming, read through the device's manual to understand the physical layout, including the buttons, display, menu options, and battery installation. Spend time holding the device to become comfortable with its weight and button placement, as you'll need to navigate menus and enter data during the programming process.

Gathering Frequency Information for Your Area

Programming a scanner requires accurate frequency data. The first challenge many users face is locating the specific frequencies they want to monitor. This information is publicly available through several legitimate sources. Radio Reference (radioreference.com) is one of the most comprehensive online databases, containing frequency listings for emergency services, commercial users, and amateur radio operators across North America. The website is organized by state and county, making it relatively straightforward to find local frequencies.

Local fire departments and police agencies often publish their frequency information on official websites or through public information offices. Calling these departments directly may also provide frequency details, though some agencies limit this information for operational security reasons. Additionally, scanner enthusiast communities maintain forums and websites where users share frequency lists specific to their regions. These communities often provide context about which frequencies are most active and worth monitoring.

When gathering frequency information, it's important to understand the difference between active and inactive frequencies. Some frequencies listed in databases may no longer be in use, while others might be backup frequencies used only during emergencies or specific situations. Talking with experienced scanner users in your area through online forums or local radio clubs can provide insights about which frequencies actually produce activity worth monitoring. This saves time during programming and prevents frustration from monitoring silent frequencies.

The format of frequency data is important to note. Frequencies are typically listed as five-digit numbers followed by a decimal point and one or two additional digits. For example, a frequency might be listed as 460.2250 MHz. Understanding this notation ensures you enter the correct values into your scanner. Some sources may list frequencies in slightly different formats, so learning to recognize and convert between formats prevents data entry errors.

Documentation is valuable during this research phase. Creating a spreadsheet or written list of frequencies you want to program, along with their corresponding agencies or services, helps organize your thoughts before beginning the actual programming process. Include columns for frequency, mode (FM or AM), and agency name. This organized approach makes the physical programming process faster and reduces the likelihood of entering incorrect data into your scanner's memory.

Practical takeaway: Create a master list of at least 20-30 frequencies you want to monitor, organized by category (police, fire, emergency services, etc.). Include the exact frequency number, the required mode, and the agency or service name. This preparation work significantly streamlines the programming process when you sit down with your scanner.

Step-by-Step Programming Process for the Pro 668

The actual programming of the RadioShack Pro 668 involves a systematic process using the device's keypad and menu system. The standard method involves manually entering each frequency into the scanner's memory one at a time. To begin, power on the device and ensure the display is visible. You'll need to navigate to the memory or programming mode using the device's buttons. Most models use a dedicated button labeled "MEM" or "PROG" to access the programming interface.

Once in programming mode, you'll select which memory bank and slot where you want to store your first frequency. The Pro 668 typically allows you to choose from multiple banks, numbered 1 through 10, with each bank containing multiple frequency slots. Selecting Bank 1 and Slot 1 is a logical starting point. After selecting your location in memory, you'll use the numeric keypad to enter the frequency number exactly as it appears in your reference material.

After entering the frequency, the next critical step involves selecting the correct mode for that frequency. This is typically done through a menu selection process where you choose between FM and AM. Selecting the wrong mode will prevent proper reception. Most public safety frequencies operate in FM mode, but verifying this information in your reference source before programming prevents problems. Some scanners allow you to program additional settings at this point, such as priority status or tone squelch settings, though these are optional for basic operation.

Once you've entered the frequency and selected the mode, you'll confirm this data entry and move to the next memory slot. Repeating this process for each frequency on your master list is the foundation of scanner programming. The process is straightforward but requires attention to detail, as even a single digit error will result in an incorrect frequency. If you make a mistake, the device typically allows you to review and edit individual memory slots before finalizing the data.

Some Pro 668 models include cloning capabilities, which allow users to transfer frequencies from a computer to the scanner using specialized software and cable. This method is significantly faster than manual entry, especially when programming large numbers of frequencies. However, not all Pro 668 models support cloning, and obtaining the necessary software and cables requires additional research and expense. The manual method remains reliable and requires no additional equipment beyond the scanner itself.

Practical takeaway: Program your first 10 frequencies slowly and methodically, checking each entry in the scanner's memory before moving to the next one. This careful approach helps you become comfortable with the process and catch any entry errors early, making it easier to program the remaining frequencies more efficiently.

Operating Your Programmed Scanner Effectively

Once your frequencies are programmed into the RadioShack Pro 668, operating the device involves understanding its scanning and monitoring functions. In scan mode, the scanner automatically cycles through your programmed frequencies, stopping briefly on each one to listen for activity. When it detects a transmission on any frequency, it locks on that channel and allows you to hear the communication. Once the transmission ends and the channel becomes quiet, the scanner resumes cycling through the remaining frequencies.

The speed at which the scanner cycles through frequencies can typically be adjusted. A faster scan rate means the device moves through frequencies more quickly, potentially missing brief transmissions. A slower scan rate allows more time on each frequency but means you'll hear fewer total transmissions in a given time period. Experimenting with different scan speeds helps you find a balance that works for your listening preferences and the activity levels in your area.

Another useful feature is the lockout function, which allows you to temporarily skip specific frequencies. This is valuable if you want to exclude certain frequencies from your scan without erasing them from memory. For example, if a particular frequency has little activity or if you want to focus on specific agencies during a particular monitoring session, you can lock out less relevant frequencies. This customization makes your monitoring experience more enjoyable by reducing scanning time spent on inactive or less interesting frequencies.

The squelch function is another important operating tool. Squelch acts as a filter that prevents the scanner from producing static noise when no signal is present. By adjusting the squelch level, you can control how strong a signal must be before the scanner produces audio.