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Multi-System Digital/Analog APCO P25 Triple-Trunking Base/Mobile Scanner


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Intuitive "Object Oriented" User Interface Design
Designed for ease of use, yet powerful enough to satisfy the most sophisticated experts. Common data entry, browsing and control methods are used for non-trunked conventional channels, trunking talkgroups, search configurations and Spectrum Sweeper setups. The radio grows with you (you can start out with a small, easy to manage configuration, then expand it whenever you need to).

Powerful and Flexible Scan List Functionality
Allows you to arrange, group and scan objects according to your peference, with no limit to the number or types of objects in a Scan List, and no limit to the number of Scan Lists an object can be a member of.

Menu Driven Programming with Context Sensitive Help
Each menu item provides a few lines of help text that provide assistance with programming and using the scanner.

Upgradeable CPU and DSP Firmware
You can easily keep your radio current with software enhancements as they become available with free upgrades from our website!

Flexible Free-Form Memory Organization
Memory is assigned as objects are created using a sophisticated internal file management system. You are not constrained to traditional bank/channel scanner memory layouts. No memory is wasted as a result of bank/channel programming constraints. The scanner has sufficient main memory capacity to store over 1,800 conventional channels, trunking talkgroups, search configurations and Spectrum Sweeper objects in any combination, providing ample capacity for more sophisticated hobbyists and professionals while keeping the database size manageable for beginners.

GRE's Exclusive V-Scanner Technology
Allows you to save complete radio configurations within the radio, for recall into main memory as needed in the field. This is similar to having a laptop computer and programming software available anytime. You can use V-Scanners to store configurations for different geographical areas or usage styles. Twenty-one V-Scanner Folders are provided, each capable of storing over 1,800 objects. Total memory capacity of main memory combined with V-Scanners is over 39,600 (1,800+37,800) objects!

Multi-System Trunking
Scans most common trunked radio system signaling formats, including Motorola, EDACS Standard, EDACS Narrow, LTR and P25 trunked radio networks. Talkgroup call and individual call monitoring are supported. Supports trunking operation in virtually any land mobile radio band, including 700 MHz and the new Federal 380 MHz band!

P25 NAC Functionality
Much like CTCSS and DCS with analog signals, P25 Network Access Code (NAC) is used to provide selective squelch operation on conventional P25 digital channels. GRE's PSR-500 Advanced Digital Scanner will detect the NAC that is being used on a P25 conventional digital channel, and will allow you to program NAC codes to block transmissions that do not have a matching NAC, including analog traffic on the same frequency!

Remote Control Capability
Can be used with third party application software to remotely control the scanner from a personal computer.

Exclusive ALERT LED
Programmable tri-color LED can be configured to illuminate or flash when certain objects are active. Eight user-defined colors and brightness levels can be specified from thousands of possible combinations. Provides visual alerts when certain objects are active, e.g., blue can be used to signal activity on a primary police call, red for fire, etc."

Audible alarms
Programmable audible alarms can be configured to sound when certain objects are active. Can be used in conjunction with, or separately from, the ALERT LED described above.

GRE's Exclusive Automatic Adaptive Digital Tracking
When monitoring Motorola and P25 digital systems, instantly adapts the digital decoder to the digital modulation format of the transmitted signal, then analyzes the digital signal 50 times each second and adapts to any subtle changes caused by multipath or fading. No cumbersome manual adjustments are required.

GRE's Exclusive Digital AGC
Instantly compensates for low audio levels that are very common on digital systems. The radio is easier to listen to, and provides you with a more enjoyable scanning experience.

The Best Subaudible Squelch Decoder in the Scanning Industry
CTCSS and DCS subaudible squelch coding is processed by the same powerful DSP chip that is used for P25 digital decoding. Provides fast and reliable decoding of subaudible squelch signaling with squelch tail elimination.

High Speed PC Interface
Uses GRE's 30-3290 USB cable in full duplex mode at 6 times the speed of previous scanner models for PC transfer and 8 times the speed of previous models for radio-to-radio cloning.

Powerful Spectrum Sweeper
Quickly sweeps the scanner's frequency ranges for transmissions from nearby transmitters.

Real-time Signal Strength Indicator
Shows relative strength of received signals.

Trunking Control Data Output
Streams decoded trunking control data from your PSR-500 to a personal computer for use with popular third party trunking control channel monitoring software. No slicer needed! Also streams NOAA weather radio SAME alert data!

High Contrast LCD Display
Provides one row of dedicated icons, and four rows of 16 characters for programming and scanning operations.

SAME and All Hazards Weather Alerting
GRE's PSR-500 Advanced Digital Scanner can operate in dedicated SAME weather alerting mode, and alert you to severe weather and other hazards in the specific area(s) that you select, or, the scanner can check your local NOAA weather frequency periodically, even while scanning, and alert you when an All Hazards alert occurs.

SKYWARN Storm Spotter Functionality
Provides instant, one button access to frequencies used by storm spotter networks. You can monitor storm conditions as they occur, and become aware of dangerous conditions before the media or emergency management officials are able to announce them to the general public.

Sleek, Compact Case Design
Has a Large Speaker for adequate volume in most environments, and is designed for one-handed operation for ease of use

AC Power Adapter, BNC Antenna, USB PC/IF Data cable and CD Media w/User's Manual

  • Digital Triple Trunking Desktop/Mobile Scanner
  • Intuitive "Object Oriented" User Interface Design
  • Powerful and Flexible Scan List Functionality
  • Menu Driven Programming with Context Sensitive Help
  • Upgradeable CPU and DSP Firmware
  • Flexible Free-Form Memory Organization
  • GRE's Exclusive V-Scanner Technology
  • Multi-System Trunking
  • P25 NAC Functionality
  • Remote Control Capability
  • Exclusive ALERT LED
  • Audible alarms
  • GRE's Exclusive Automatic Adaptive Digital Tracking
  • GRE's Exclusive Digital AGC
  • The Best Subaudible Squelch Decoder in the Scanning Industry
  • High Speed PC Interface
  • Powerful Spectrum Sweeper
  • Real-time Signal Strength Indicator
  • Trunking Control Data Output
  • High Contrast LCD Display
  • SAME and All Hazards Weather Alerting
  • SKYWARN Storm Spotter Functionality
  • Sleek, Compact Case Design with Large Speaker
  • 1-year Manufacturer's warranty

Radio Features

Scanner Design
This is the design of the scanner. Desktop scanners are meant to be used on a desk or table. Base/Mobile scanners can easily be used in a vehicle or mounted in a fixed location. Portable (or handheld) are scanners that are battery powered and are easily carried around.
Trunking System
The amount of compatible trunking systems will determine the amount of trunking systems and channels.
Triple Trunking
Scanner Type
This defines the type of scanner and the uses that it is designed for.
Fire / EMS
Channel Memory (Radio Scanners)
This is the number of channels that the radio frequency is capable of storing.
39,000 Channels

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


Wimberley, TX


April 4, 2012

Great scanner in a small package. Computer interface works easily. Programming by hand takes awhile until you "get" the way it works. Really fine digital tracking scanner in my opinion.

4 of 5 found this helpful

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Carlisle, PA


October 19, 2011

Pro- Price
Con-misses several transmissions
Con-software wont work (for me)
Con-Instructions are difficult to understand if you have no experience with this type of scanner.
Con-difficult to program

2 of 2 found this helpful

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Durham, NC


May 4, 2012

We bought this for our inlaws who used to enjoy listening to what was going on in the neighborhood on the old analog version. Although the initial programming is rather complicated, once it's set up the hard part is done. They thank us often for the gift and have it on 24/7.

1 of 2 found this helpful

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Toms River, NJ


May 2, 2012

This Scanner is Excellent. Took me 10 minutes to Program Using Radio Reference, It is very light and the color coded LED light helps determine what type service is talking (i.e. POLICE, FIRE AND EMS)

0 of 1 found this helpful

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Product Summary


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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: GRE PSR-600