The MALÅ ProEx is a modular digital radar control unit with multi-channel functionality. The unit is designed for two hardware channels (4 data channels). Adding an antenna module allows connection of two separate antennas for simultaneous data collection. As an option, the MALÅ ProEx Expansion Unit can be added to support up to eight individual antennas. A choice of three antenna modules (optical, high frequency and coax) allows the user to connect MALÅ antennas in various configurations, for single, dual or multi-antenna operation.

• Pulse repetition freq.: 100, 200 kHz, not interleaved
• Data bits: 16
• Nr. of samples/trace: 128-2048, in standard configuration, other on request
• Nr. of stacks: 1 – 32768 and auto stacking
• Samplings 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

• 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

100 MHz

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.

250 MHz

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.

500 MHz

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.

800 MHz

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

1.2 GHz

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
• Weight: 1.0 kg

(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 most shallow 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/ cables
• Skid / wear plates
  Road Cart

30 MHz

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

50 MHz

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

100 MHz

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

Accessories for RTA

• Towing belt
• Skid plates
• Hip chain

30 MHz

The MALÅ Unshielded 30 MHz Antennas are suitable for investigations requiring deep penetration. Antenna elements are detachable for easy transportation.

• Dimensions: 406 x 20 x 7 cm
• Weight: 3.85 kg (each)
• Applications: Geological and stratigraphical surveys in open terrain.

50 MHz

The MALÅ Unshielded 50 MHz Antennas are suitable for investigations that require medium to deep, depth penetration. They are lightweight and are suitable for one-person operation. Antenna elements are detachable for easy transportation.

• Dimensions: 206 x 20 x 7 cm
• Weight: 2.65 kg (each)
• Applications: Geological and geotechnical applications.

100 MHz

The MALÅ Unshielded 100 MHz Antenna is suitable for a wide range of applications that require medium depth penetration.

• Dimensions: 104 x 16 x 4 cm
• Weight: 1.10 kg (each)
• Applications: River and lake bottom mapping, landfill studies, karst, deep pipe and bedrock detection.

200 MHz

The MALÅ Unshielded 200 MHz Antennas are suitable for investigations that require medium depth penetration.

• Dimensions: 54 x 16 x 4 cm
• Weight: 0.55 kg (each)
• Applications: Utility detection, bedrock and cavity detection.

Accessories for unshielded antennas

• A number of accessories are available for the MALÅ Unshielded Antennas:
• Soft-sledge for long profiles
• Options for distance measurement and trace triggering
• Fiber optic cables
• CMP

100 MHz Slimhole Borehole Antenna

The MALÅ 100 MHz Slimhole Borehole Antenna is the lowest frequency available, used for medium to low resolution investigations.

Dimensions:

• 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

250 MHz Borehole Antenna

The MALÅ Borehole 250 MHz Antenna is a general purpose antenna, used for investigations that require medium resolution.

Dimensions:

• 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

1.3 GHz

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

400 MHz

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

200 MHz

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