Designed on a fully modular platform, the MALÅ Professional Explorer (ProEx) stands as the most versatile control unit in the MALÅ lineup, succeeding the world-renowned RAMAC/GPR CUII. When paired with the MALÅ XV Monitor, the ProEx controller offers unmatched compatibility across a wide range of antennas. This provides a highly flexible and multi-functional approach to detecting subsurface targets and geological layers with real-time accuracy and efficiency. Common high-level applications include critical arctic research, high-speed multi-channel road pavement mapping, and geological assessments for safe nuclear waste repositories.
MALÅ XV Monitor – Seamless GPR Data Acquisition & Visualization
The MALÅ XV Monitor is a dedicated, field-optimized tool engineered specifically for real-time GPR data collection, handling, processing, and visualization. Its user interface is streamlined and intuitive, featuring a unique dual-function knob that allows operators to navigate complex menus effortlessly. Built strictly for the harshest field environments, the MALÅ XV Monitor features a ruggedized, IP65-certified weather-resistant casing and an impact-resistant screen. The high-brightness, daylight-readable display ensures pristine data clarity, even when operating under direct, intense sunlight.
MALÅ ProEx Control Unit

Professional Explorer Control Unit Specifications
- Pulse repetition frequency: 100, 200 kHz, notes interleaved
- Data bits: 16
- Nr. of samples/trace: 128-2048, in standard configuration, other on request
- Nr. of stacks: 1 – 32768 and auto stacking
- Sampling frequency: 2 – > 400 GHz
- Signal stability: < 70 ps
- Communication interface: Ethernet
- Communication speed: 100 Mbit/s
- Data transfer rate: Antenna dependent
- Acquisition modes: Distance/time/manual
- Power supply: 12 V MALÅ standard battery / external battery
- Operating time: Typically 5 h, antenna dependent
- Software: GroundVision2 or MALÅ XV Monitor
- Antennas: All MALÅ manufactured (not HDR)
- Wheel inputs: 1 master, 1 for each HF-unit
- Operating temp.: -20 °C to +50 °C or 0 °F to 120 °F
- Environmental: IP65
XV Monitor

XV Monitor Technical Specifications
- Power supply: Li-Ion 12 V battery or other external source (9-18 V)
- Operating time: 5 h nominal (12 V battery)
- Operating temp: -20 °C to +50 °C or 0 °F to 120 °F
- Environmental: IP65
- Dimensions: 6 x 21.5 x 5.2 cm (with protruding details 8.6 cm)
- Weight: 6 kg
- Antennas: All MALÅ antennas (not HDR), except when operating the MALÅ borehole antennas in tomographic mode
- Communication: Ethernet 100Mb/s
- Display: LCD (640 x 480 pixels), hi-brite
High Frequency Antennas (HF)

The MALÅ 1.2 GHz HF Antenna is a high resolution antenna used for high quality radar measurements, with the deepest penetration in the MALÅ HF range. An optional EM sensor enables the detection of radiating 50/60 Hz fields from power cables and/or other metallic conductors within the structure under investigation.
- Dimensions: 19 x 11.5 x 11 cm
(1.2 kg with 50/60 Hz EM sensor option)
1.6 GHz
The MALÅ 1.6 GHz HF Antenna is a high resolution antenna used for high quality radar measurements, with medium penetration in the MALÅ HF range. An optional EM sensor enables the detection of radiating 50/60 Hz fields from power cables and/or other metallic conductors within the structure under investigation.
- Dimensions: 16 x 9 x 11 cm
- Weight: 0.6 kg
(1.2 kg with 50/60 Hz EM sensor option)
2.3 GHz
The MALÅ 2.3 GHz HF Antenna is a high resolution antenna used for high quality radar measurements, with the shallowest penetration in the MALÅ HF range.
- Dimensions: 16 x 9 x 11 cm
- Weight: 0.5 kg
Accessories for HF antennas
- HF Cart
- Single measuring wheel
- Extension handle/cable
- Skid / wear plates
- Road Cart
Rough Terrain Antennas (RTA)

The MALÅ RTA 30 MHz is suitable for investigations requiring the greatest depth penetration.
- Length: 13.06 m (distance Tx-Rx: 6 m)
- Weight: 8 kg
The MALÅ RTA 50 MHz is suitable for investigations that require medium to deep, depth penetration.
- Length: 9.25 m (distance Tx-Rx: 4 m)
- Weight: 7.0 kg
The MALÅ RTA 100 MHz is suitable for investigations that require medium depth penetration.
- Length: 6.56 m (distance Tx-Rx: 2 m)
- Weight: 6.0 kg
- Towing belt
- Skid plates
- Hip chain
Shielded Antennas

The MALÅ Shielded 100 MHz antenna is used for medium to low resolution investigations.
- Dimensions: 125 x 78 x 20 cm
- Weight: 25.5 kg
- Applications: Geological and geotechnical applications.
The MALÅ Shielded 250 MHz antenna is a general purpose antenna, used for investigations that require medium depth penetration and medium resolution.
- Dimensions: 74 x 44 x 16 cm
- Weight: 7.85 kg
- Applications: Utility detection, Underground Storage Tank (UST) and void detection.
The MALÅ Shielded 500 MHz antenna is a general purpose antenna for shallow to medium depth investigations.
- Dimensions: 50 x 30 x 16 cm
- Weight: 5.0 kg
- Applications: Utility detection, road and pavement surveys.
The MALÅ Shielded 800 MHz antenna is suitable for shallow depth investigations.
- Dimensions: 38 x 20 x 12 cm
- Weight: 2.6 kg
- Applications: Road / pavement surveys and concrete / structural investigations.
Accessories for shielded antennas
- Towing kit
- Skid plates
- Measurement triggering wheels
- Rough Terrain Cart (RTC)
- Road Cart
Borehole Antennas

100 MHz Slimhole Borehole Antenna
The MALÅ 100 MHz Slimhole Borehole Antenna is the lowest frequency available, used for medium to low resolution investigations.
- Tx: Length: 189 cm (including batteries) – Diameter: 40 mm
- Weight: 3.3 kg
- Rx: Length: 176 cm (including batteries) – Diameter: 40 mm
- Weight: 3.6 kg
The MALÅ Borehole 250 MHz Antenna is a general purpose antenna, used for investigations that require medium resolution.
- Tx/Rx: Length: 129 cm (including batteries) – Diameter: 48 mm
- Weight: 4.75 kg
Accessories for borehole antennas
- Antenna separators
- Tripods
- Mechanical/digital depth encoders
- Electrical winches
Separable Shielded Antennas

The 1.3 GHz Separable Shielded Antenna elements are typically used for high precision, high resolution measurements and velocity estimations.
- Dimensions: 9 x 8 x 12 cm
- Weight: 1.5 kg each
- Power @ 12 V: Rx: 0.45 [A] Tx: 0.35 [A]
- Compatibility: MALÅ ProEx Control Unit with coaxial module MALÅ MIRA System
The 400 MHz Separable Shielded Antenna elements are typically used for high precision measurements, velocity estimations and where any variation of polarization and Rx-Tx distance is needed.
- Dimensions: 16.5 x 15.5 x 23 cm
- Weight: 2.1 kg each
- Power @ 12 V: Rx: 0.40 [A] Tx: 0.90 [A]
- Compatibility: MALÅ ProEx Control Unit with coaxial module MALÅ MIRA System
The 200 MHz Separable Shielded Antenna elements are typically used for high precision measurements, velocity estimations and where any variation of polarization and Rx-Tx distance is needed.
- Dimensions: 26 x 24 x 46 cm
- Weight: 4.2 kg each
- Power @ 12 V: Rx: 0.45 [A] Tx: 0.75 [A]
- Compatibility: MALÅ ProEx Control Unit with coaxial module MALÅ MIRA System