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
 - The Bad Elf Flex comes in either Standard or Extreme mode
 - Flex Radio Kit adds $1999.99 ea.1
 

Versatile
No need for dedicated devices and configurations. Bad Elf Flex Extreme operates as either a base or a rover2. 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 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
 - Radio kit includes checklist for customer to obtain FCC license with recommended frequency coordinator
 - Radio LCD screen supports configuration and status monitoring
 
Full featured
- Radio charging 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
 
Reliable
Continual system checks
- Constellation health
 - Tilt-check as well as 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
 
Radio Kit Contents
- Harxon Radio HX-DU1603D
 - UHF Antenna
 - Rugged carrying case
 - AC wall charger
 - Charging/Serial Cable
 - Survey pole mount
 

1 Each Bad Elf Flex requires 1 radio kit
 2 Rover mode available with Flex Standard using a Flex Token to enable Extreme mode