• (2) BE-GPS-6500 - Bad Elf Flex Extreme GNSS Receivers
• (2) BE-URK-5000 - UHF Flex Radio Kits 
• A full Base / Rover Solution
• (Rover Rod Poles Sold Separately)

BASE/ROVER REIMAGINED 

• Bad Elf introduces a base/rover feature built upon the Bad Elf Flex® GNSS receiver. 
• This new base/rover feature brings affordable centimeter-level accuracy to surveyors and geospatial professionals working anywhere in the world. 
• The solution consists of two Flex GNSS receivers and two UHF radios, allowing customers to perform high-accuracy field data collection in areas where traditional RTK corrections or cellular coverage is not available. 
• Existing Flex customers can upgrade to a base/rover solution by adding a Flex radio kit, one for the base and one for the rover.

ACCURATE

• Built on the survey-grade Hemisphere Phantom GNSS engine
• Expected accuracy - 1 cm horizontal in good conditions
• Quad-constellation corrections source from base to rover
• Range (power-determined) 2-10 km line-of-sight
• Global operations, regardless of cellular coverage

AFFORDABLE

• A professional system for a cost-competitive price without sacrificing features or functions

VERSATILE

• No need for dedicated devices and configurations. 
• Bad Elf Flex Extreme operates as either a base or a rover. (Rover mode is available with Flex Standard using a Flex Token to enable Extreme mode)
• Simply fire up the Flex app and enable either mode of operation.

CHECKLIST-BASED WORKFLOW

An intuitive tool to ensure best practices, built upon lessons learned from the aviation industry. Designed to mitigate error and improve efficiencies in the field.

• Pole height and antenna configuration
• Tilt check and calibration
• GNSS lock
• Battery checks
• Radio connectivity checks
• Configuration of base location via here point or known point, with associated datum metadata
• Reliable GNSS checks

OPEN DATA STANDARDS FOR ALL COLLECTED INFORMATION

• CSV logs
• Standard Rinex is compatible with OPUS and many other post-processing systems
• JSON metadata for events and project details
• Standard NMEA streaming via Bluetooth or USB

FCC-APPROVED

• FCC-approved radios with callsign support
• The radio kit includes a checklist for customers to obtain an FCC license with recommended frequency coordinator
• Radio LCD screen supports configuration and status monitoring

FULL-FEATURED

• Radio charging is available via provided AC adapter
• Includes protective equipment case, charger, and mounting accessories

OPTIMUM SETUP

• Fully compatible with iOS and Android phones and tablets
• Bluetooth connected - clean setup with no wires
• Primary interface via Flex utility app
• Standalone operation from the Flex LCD screen for use without a connected phone or tablet
• Native multi-rover support

RELIABLECONTINUAL SYSTEM CHECKS

• Constellation health
• Tilt-check as well as a movement indicator
• Radio connectivity issues
• Bluetooth connection loss
• Flex and radio battery state-of-charge

ADVANCED LOGGING

• All events  logged with data and packed with timestamps for maximum integrity
• Should a recorded session need to be defended for truth or accuracy, everything that is needed to recreate a session is included in one place

Bad Elf Flex® UHF Radio Kit Details:

• The Flex radio kit provides a UHF radio link used for communicating corrections from a Flex operating as a fixed base station to one or more Flex units operating as rovers. 
• A Flex radio connects via Bluetooth to Flex and requires no additional cables. 
• For more information see the Bad Elf Flex base/rover page or contact sales@baselineequipment.com
• Operating Frequency: 450mHz to 470mHz frequency range.

Radio Kit Contents:

• Harxon Radio HX-DU1603DUHF Antenna
• Rugged carrying case
• AC wall charger
• Charging/Serial Cable
• Survey pole mount