RTmap61MK2 – Real-Time Geophysical Survey System for Geonics EM61-MK2 Metal Detector
EM61-MK2 Standard Coils
The RTmap system for Geonics EM61-MK2 consists of two separate but fully integrated programs:
RTmap61MK2 – field data acquisition and mapping software for Windows 11/10–based tablets and field laptops
RTM61MK2 – Windows-based data-processing and XYZ-file generation program
All types and models of EM61-MK2 metal detectors are supported. This system is widely used in UXO detection, geophysical metal-detection surveys, site clearance, environmental investigations, infrastructure mapping, and utility search.
RTmap61MK2 – Data Logging & Real-Time Mapping for EM61-MK2
The RTmap61MK2 program provides unmatched real-time QA/QC, live colour mapping, and precise navigation for EM61-MK2 metal-detection surveys.
The program displays a real-time spatial colour image of EM61-MK2 amplitudes, enabling the operator to immediately adjust survey speed and line density when anomalies are observed.
RTmap61MK2 Logging Mode
RTmap61MK2 improves field productivity by guiding the operator along uniformly spaced survey lines, preventing skipped areas and eliminating unnecessary overlap—critical for UXO surveys, wide-area metal detection, munitions response, and clearance verification.
The system provides full oversight of EM61-MK2 instrument status, battery level, cable connections, GPS/RTK/RTS parameters, and user-defined GPS Warning Mask settings.
Built-In UXO Survey Advantages
Highly visible real-time anomaly detection
Faster coverage of large grids or open areas
Reliable navigation even in poor visibility or darkness
Precise relocation of previously acquired stations or grids
High-resolution amplitude mapping for metallic target identification
GPS / RTK / RTS / SLAM Integration
RTmap61MK2 works with virtually any GPS receiver supporting NMEA messages (GGA, POS, GLL, LLQ, LLK, GGK), and supports Trimble, Leica, and other Robotic Total Stations, including RTS SLAM options (confidence, pitch, roll, yaw) from pseudo-GGA streams.
Navigation & Background Data
Operators can load up to 10 previous surveys or user-prepared files (site outlines, grids, features), providing precise spatial control and easy return to earlier survey stations.
Operation in Difficult Conditions
Survey lines can be resumed at exact positions after obstacles or interruptions—no tapes or stakes required.
The system supports full operation at night or under low visibility.
RTmap61MK2 can also convert any supported tablet/laptop into a stand-alone GPS/DGPS/RTS logger.
RTmap61MK2 System Geometry Description
RTM61MK2 – Data Processing Software for EM61-MK2
The RTM61MK2 The program processes data collected by RTmap61MK2 and positions each EM61-MK2 reading using:
RTmap61MK2 Key Features (Field Data Acquisition Program)
Real-time color imaging for EM61-MK2 user selected EM61-MK2 channel
Real-time calculation and display of EM61-MK2 sensor offset relative to the GPS antenna
User-defined map scale (meters or feet), grid/guide-line spacing, map tilt, and adjustable cursor band with automatic scrolling
All 4 EM61-MK2 channels displayed as moving graphic bars and numeric values
GPS antenna position in Latitude/Longitude or UTM (m/ft), differential correction mode (DGPS, RTK), PDOP/HDOP, satellite count, and GPS/RTS fix count
Continuous GPS signal monitoring and user-defined GPS Warning Mask
Support for up to 10 external background files (site boundaries, excavation plans, previous survey layouts)
Map panning controls in all directions
Continuous visual and audible monitoring of EM61-MK2 console and GNSS/GPS/RTS connections
Audio functions: Tik-Tak indicator for active data recording, Alarm Ring for EM61-MK2 or GPS disconnection, and Soft Alarm for GPS Warning Mask events
Review mode: pseudo-grid visualization with Zoom In/Out, Pan, zoom step selection, and component selection
Tablet-optimized interface with enlarged fonts, improved layout, and soft-keyboard-friendly dialogs designed for the field use
RTmap61MK2 Demo Version
The RTmap61MK2 demo operates the same as the full version except that the included data file is short. Monitoring mode runs without time limits, allowing verification of:
