How to fix a GRE Scanner that won't turn on?
If your GRE Scanner isn't working, first ensure the AC or DC adapter is properly connected to a working outlet or cigarette-lighter socket and fully inserted into the scanner's PWR jack. Also, check if the internal batteries/battery pack need recharging, or if non-rechargeable batteries are dead. Charge rechargeable batteries or replace dead batteries with fresh ones.
Why is my GRE Scanner reception so bad?
If you are experiencing poor or no reception on your GRE Scanner, ensure the antenna is properly connected. Also, avoid programming frequencies that are the same as birdie frequencies, as listed on Page 19.
What to do if my GRE Scanner is on but not scanning?
If your GRE Scanner is on but not scanning, the SQUELCH may not be correctly adjusted. Adjust the SQUELCH clockwise, referring to the section on "Turning On the Scanner/Setting Volume and Squelch."
Why does my GRE PSR-255 lock on unclear frequencies?
If your GRE Scanner locks on frequencies with unclear transmissions in scan mode, the programmed frequencies might be the same as birdie frequencies. Avoid programming frequencies listed as "Birdie Frequencies," or only listen to them manually.
Allows searching within preset frequency ranges for quicker discovery of transmissions.
Enables storage of up to 50 favorite frequencies for easy recall and scanning.
Automatically warns if a frequency is already stored, enhancing memory efficiency.
Temporarily saves a frequency found during a direct search for later channel storage.
Prevents selected channels from being scanned, improving scanning efficiency.
Retains channel frequencies for approximately 1 hour after a power loss.
Delays scanning for 2 seconds after a transmission, allowing more replies to be heard.
Locks keypad keys to prevent accidental changes to the scanner's programming.
Provides excellent reception and allows easy connection of various antennas.
Clearly displays scanner settings and facilitates easy changes to configurations.
Allows powering the scanner via internal batteries, rechargeable pack, or AC/DC adapter.
Details on powering the scanner using internal batteries, rechargeable packs, AC, or vehicle DC adapters.
Instructions for connecting and using an AC adapter for powering the scanner.
Instructions for powering the scanner using a vehicle's DC cigarette-lighter socket.
How to charge rechargeable battery packs or batteries using the scanner's built-in circuit.
Steps to attach the supplied flexible antenna or connect optional antennas.
How to use the belt clip for hands-free carrying of the scanner.
Instructions for connecting earphones or headphones for private listening.
How to connect an extension speaker for better audio in noisy environments.
Explanation of the functions of each key on the scanner's keypad.
Explanation of the indicators and symbols shown on the scanner's display.
Details on preprogrammed frequency bands and using monitor memory.
Steps for powering on the scanner and adjusting volume and squelch settings.
How to manually store frequencies into channels or via band/direct search.
Instructions on how to search for active frequencies using preprogrammed bands.
How to search up or down from a specific frequency and store it.
Procedures for monitoring stored channels and initiating channel scanning.
Steps to delete stored frequencies from specific channels.
How to program a 2-second delay for monitoring channels after transmission stops.
Method to prevent specific channels from being scanned.
Instructions to turn on the display backlight for better visibility in low light.
Procedure to enable or disable the audible tones for key presses.
How to lock the keypad to prevent accidental changes to the scanner's settings.
Information about internal scanner frequencies that might cause interference.
Details on frequency step intervals for different bands.
Possible causes and remedies if the scanner fails to power on or operate.
Solutions for issues related to weak or absent signal reception.
Troubleshooting steps when the scanner is on but fails to scan channels.
How to resolve issues where the scanner gets stuck on noisy or unclear transmissions.
Procedure to restart the scanner if the display locks up or malfunctions.
Steps to restore the scanner to its default factory settings, clearing all data.
The PSR-255 is a 50-channel portable scanner designed to provide direct access to over 26,000 exciting frequencies, including those used by police and fire departments, ambulance services, and amateur radio services. Users can select and store up to 50 of their favorite frequencies for easy recall and scanning, with the flexibility to change selections at any time. The scanner's capabilities are powered by a custom-designed microprocessor.
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