Antennas

Our Past, Present and Future: GPR Antennas

With nearly four decades experience, GSSI continues to design and manufacture the world’s best Ground Penetrating Radar (GPR) antennas. GSSI antennas feature the highest signal-to-noise ratio of any antenna available in the industry, providing the highest quality data with clear and accurate results.

GSSI has developed a series of antennas to meet the needs of a broad range of applications. All antennas are interchangeable with ANY SIR-System. Features include:

  • Rugged, military-style connectors
  • Long-life replaceable wear skids
  • Coated, sealed electronics
  • Rugged, high-density molded cables
  • Shielding to eliminate aboveground interference
  • Operates from -20°C to 50°C
Center Frequency Depth of Penetration* Typical Applications
2600 MHz to 0.4 m (12 in) Concrete Evaluation
2000 MHz Palm to 0.4 m (12 in) Concrete Evaluation
1600 MHz to 0.5 m (18 in) Concrete Evaluation
1000 MHz to 0.6 m (24 in) Concrete Evaluation
900 MHz 0-1 m (0-3 ft) Concrete Evaluation, Void Detection
400 MHz 0-4 m (0-12 ft) Utility, Engineering, Environmental,
Void Detection
270 MHz 0-6 m (0-18 ft) Utility, Engineering, Geotechnical
200 MHz 0-9 m (0-30 ft) Geotechnical, Engineering, Environmental
International
100 MHz 2-15 m (5-50 ft) Geotechnical, Engineering, Mining
16-80 MHz 0-50 m (0-150 ft) Geotechnical
Air-Launched Horn
2.0 GHz 0-.75 m (0-2.5 ft) Pavement Thickness and Road Condition Assessment
1.0 GHz 0-.9 m (0-3 ft) Highway and Bridge Deck Evaluations

*Penetration depths may vary depending on soil conditions.

2600 MHz - High Resolution Concrete Antenna

  • Center Frequency: 2600 MHz
  • Depth Range: to 0.4 m (12 in)
  • Weight: 1.8 kg (4 lbs)
  • Dimensions: 3.8x10.16.5 cm (1.5x4x6.5 in)
  • Model 52600

The new 2600 MHz is an ultra-high resolution antenna used to inspect concrete structures to locate embedded rebar, post tension cables and conduits.

 2000 MHz - Palm Antenna

  • Center Frequency: 2000 MHz
  • Depth Range: to 0.4 m (12 in)
  • Antenna Weight: .49 kg (1.1 lbs)
  • Cable Weight: .95 kg (2.1 lbs)
  • Dimensions: 104.5x91.5x154.7 mm (4.1x3.6x6 in)
  • Model 62000

The new Palm Antenna offers users the ability to reach tightly spaced areas that were previously inaccessible such as corners, against walls and around obstructions.

The Palm Antenna is compatible with the SIR‑3000 and SIR-20 control units. The antenna includes a dedicated survey wheel, a replaceable skid plate, and removable handle to reduce antenna height, if necessary. The Palm Antenna weighs in at approximately one pound.

 

1600 MHz - General Purpose Concrete Antenna

  • Center Frequency: 1600 MHz
  • Depth Range: to 0.5 m (18 in)
  • Weight: 1.8 kg (4 lbs)
  • Dimensions: 3.8x10.16.5 cm (1.5x4x6.5 in)
  • Model 5100B

The 1600 MHz is a high-resolution, all-purpose antenna used to inspect concrete structures to locate embedded rebar, post tension cables and conduits. It is used on bridge decks for condition assessment and to determine concrete cover.

1000 MHz - Deep Penetration Concrete Antenna

  • Center Frequency: 1000 MHz
  • Depth Range: to 0.6 m (24 in)
  • Weight: 1.8 kg (4 lbs)
  • Dimensions: 3.8x10.16.5 cm (1.5x4x6.5 in)
  • Model 5101

The 1000 MHz antenna is the state-of-the-art in concrete imaging solution for deeper concrete investigations. This antenna is appropriate in areas where higher frequencies do not provide adequate penetration and lower frequencies do not provide acceptable resolution.

900 MHz - Shielded Antenna

  • Center Frequency: 900 MHz
  • Depth Range: 0-1 m (0-3 ft)
  • Weight: 2.3 kg (5 lbs)
  • Dimensions: 33x18x8 cm (13x7x3 in)
  • Model 3101D (U.S.), 3101A (International)

The 900 MHz antenna is designed for applications requiring shallow penetration down to 1 m (3 ft.), including void detection, concrete thickness assessment and shallow pipe location. It can also be used for location of rebar where space is not limited.

400 MHz - Shielded Antenna

  • Center Frequency: 400 MHz
  • Depth Range: 0-4 m (0-12 ft)
  • Weight: 5 kg (11 lbs)
  • Dimensions: 30x30x17 cm (12x12x6.5 in)
  • Model 5103A

The 400 MHz is ideally suited for detection and mapping of utility pipes, as well as shallow engineering and environmental applications.

270 MHz - Shielded Antenna

  • Center Frequency: 270 MHz
  • Depth Range: 0-6 m (0-18 ft)
  • Weight: 8.6 kg (18.5 lbs)
  • Dimensions: 45x45x17 cm (18x18x6.5 in)
  • Model 5104 (U.S.), Model 5104A (International)

The 270 MHz is ideally suited for detection and mapping of utility pipes, as well as shallow engineering and environmental applications.

200 MHz - Shielded Antenna

  • Center Frequency: 200 MHz
  • Depth Range: 0-9 m (0-30 ft)
  • Weight: 20.5 kg (45 lbs)
  • Dimensions: 60x60x30 cm (24x24x12 in)
  • Model 5106 (U.S.), Model 5106A (International)

The 200 MHz can penetrate to a depth of 9 meters (30 feet), making it ideally suited for geotechnical and environmental applications, as well as archaeological investigations.

100 MHz - Shielded Antenna

Monostatic

  • Center Frequency: 100 MHz
  • Depth Range: 2-15 m (5-50 ft)
  • Weight: 13 kg (28 lbs)
  • Dimensions: 25x96x56 cm (10x38x22 in)
  • Model 3207AP

The 100 MHz antenna is used for deep subsurface applications. The 100 MHz monostatic (left) combines the transmit and receive electronics in a single antenna housing.

The 100 MHz bistatic (bottom, left) is a versatile antenna pair that can operate in three different configurations to optimize performance.

Bistatic

  • Center Frequency: 100 MHz
  • Depth Range: 0-30 m (0-100 ft)
  • Weight: 26 kg (60 lbs)
  • Dimensions: 25x96x56 cm (10x38x22 in) each
  • Model 3207F

3200 Multiple Low Frequency Antenna

  • Center Frequency: 15-80 MHz adjustable
  • Depth Range: 0-50 m (0-150 ft)
  • Weight: 15-23 kg (33-50 lbs)
  • Dimensions: 120-600 cm in length (47-136 in) adjustable
  • Model 3200 MLF

The multiple low-frequency antenna is designed for the deepest radar penetration possible. The antenna design consists of interchangeable elements; by changing the length of the antenna, you change the transmission frequency. This antenna can be deployed in discrete measurements (stacking) or continuous profile data collection modes.

1.0 and 2.0 GHz Horn Antenna

The 2 GHz and 1 GHz air-launched (horn) antennas are pavement thickness and road condition assessment tools that can be used at highway speeds with the SIR-20 system.
FCC-approved antennas available for US customers.

42000S Data

2.0 GHz

  • Center Frequency: 2 GHz
  • Depth Range: 0-.75 m (0-2.5 ft)
  • Weight: 7.3 kg (16 lbs)
  • Dimensions: 21x55.6x49.5 cm (8.25x21.9x19.5 in)
  • Model 42000S; Smart ID module

1.0 GHz

  • Center Frequency: 1.0 GHz
  • Depth Range: 0-.9 m (0-3 ft)
  • Weight: 7.3 kg (16 lbs)
  • Dimensions: 21x55.6x49.5 cm (8.25x21.9x19.5 in)
  • Model 4108

4108 Data