Gre SH70 Instruction Manual

The Gre SH70 is a high-performance handheld scanner radio with wide frequency coverage, advanced scanning capabilities, digital and analog reception, close call RF capture technology, and programmable memory channels. It features a backlit LCD display, keypad lock, priority scanning, weather alert, and is powered by rechargeable Ni-MH batteries or AC adapter. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Scanning Operations 8. Advanced Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Handheld scanner unit, rechargeable battery pack, AC adapter, belt clip, wrist strap, and USB programming cable.

Feature	Description
Frequency Coverage	Wide range covering public safety, airband, marine, and more
Close Call RF Capture	Instantly detects and tunes to nearby transmissions
Digital/Analog Reception	Supports both digital and analog signal modes
Programmable Memory	Up to 500 memory channels for custom organization
Backlit LCD Display	Clear display with adjustable backlight for low-light use
Weather Alert	Built-in NOAA weather radio with alert function
Priority Scanning	Monitors priority channels while scanning others
Keypad Lock	Prevents accidental button presses
Battery Power	Rechargeable Ni-MH battery pack or AC adapter
USB Connectivity	For PC programming and firmware updates

Installation

Unpack and inspect contents. Ensure all components are present.

Install battery: Insert rechargeable battery pack into compartment.
Charge battery: Connect AC adapter to scanner and wall outlet for initial charge.
Attach accessories: Clip belt clip to back of unit; attach wrist strap.
Extend antenna: Fully extend telescopic antenna for best reception.

WARNING! Use only provided AC adapter. Do not expose to water or extreme temperatures.

First-Time Setup

Power on scanner; follow initial configuration prompts.

Set language: In SETUP menu, select ENGLISH (default).
Set time and date: Use keypad to enter current time and date.
Configure scanning: Select scan lists or service searches.
Program frequencies: Manually enter or use PC software to load channels.
Adjust volume and squelch: Turn VOL knob for volume; set squelch to eliminate background noise.

CAUTION! Keep away from strong RF sources to avoid interference.

Specifications

Frequency Range: 25-1300 MHz (cellular blocked).
Modes: AM, FM, NFM, WFM, Digital.
Memory Channels: 500 programmable channels.
Scan Speed: Up to 75 channels per second.
Display: Backlit LCD with multi-line information.
Audio Output: Built-in speaker; 3.5mm headphone jack.
Power Source: 3x AA Ni-MH rechargeable or 5V DC adapter.
Battery Life: Approx. 10 hours (typical use).
Operating Temp: -10°C to +50°C (14°F to 122°F).
Dimensions: 140mm x 60mm x 35mm (H x W x D).

Controls and Settings

Access menu via MENU button. Front Panel: POWER/VOL knob, SCROLL knob, FUNCTION key, numeric keypad, ENTER, and dedicated buttons (SCAN, HOLD, WX, PRI).

Key Functions: POWER/VOL turns unit on/off and adjusts volume. SCROLL navigates menus and frequencies. FUNCTION activates secondary key functions. SCAN starts scanning. HOLD pauses on current frequency. WX accesses weather channels. PRI toggles priority scanning.

Menu Settings: Language, Time/Date, Backlight (On/Off/Auto), Squelch Level, Scan Delay, Key Beep, Battery Save. Programming: Store frequencies, set modulation, add text tags, organize scan lists.

Connecting Devices

Headphones: 3.5mm jack for private listening. PC: USB cable for programming and updates. External antenna: BNC connector for improved reception.

Turn off scanner before connecting accessories.
Plug headphones into jack for private audio.
Connect USB cable to PC and scanner for data transfer.
Attach external antenna to BNC connector if needed.

Tip: Use provided software for easy mass programming of frequencies.

Scanning Operations

Supports manual tuning, scanning, and Close Call detection.

Manual Tune: Use keypad to enter frequency directly.
Start Scanning: Press SCAN to scan programmed channels or service searches.
Hold on Channel: Press HOLD to pause on active transmission.
Close Call: Press SRCH to activate Close Call detection of nearby signals.
Weather Alert: Press WX to listen to NOAA weather; enable alerts in menu.
Priority: Enable PRI to monitor priority channel while scanning.
Lock Out: Temporarily skip unwanted channels during scan.
Search: Perform service band searches for new frequencies.

WARNING! Do not use while driving. Obey local laws regarding scanner use.

Advanced Features

Close Call: Detects and tunes to strongest nearby transmission. Priority Scan: Monitors up to 10 priority channels. Search with Store: Automatically saves active frequencies during search. PC Programmable: Use software for advanced configuration and updates.

Care & Cleaning

Turn off and disconnect power before cleaning. Use soft, dry cloth for exterior. Clean display with screen-safe cloth. Do not use liquids or abrasive cleaners.

CAUTION! Avoid moisture. Do not disassemble unit. Store in cool, dry place.

Regulatory Information

FCC Part 15: Class B digital device; complies with limits for residential use. This device may not cause harmful interference and must accept any interference received. Copyright © Gre Communications Ltd. For support, visit www.grecom.com or contact 1-800-123-4567.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Battery/connection	Charge battery; check adapter connection; ensure power switch is on.
Poor reception	Antenna/location	Extend antenna fully; move to higher location; try external antenna.
No sound	Volume/squelch	Increase volume; adjust squelch lower; check headphone connection.
Not scanning	Programming	Ensure channels are programmed; check scan list is enabled.
Close Call not working	Settings/distance	Enable Close Call in menu; move closer to transmission source.
Display blank	Backlight/battery	Adjust backlight settings; check battery level.
PC not connecting	Driver/cable	Install driver software; ensure USB cable is properly connected.

Reset: Menu > System > Reset to Factory Defaults if needed.

Service: 1-800-123-4567; www.grecom.com