Unshielded antenna for deep geophysical surveys, center frequency: 80MHz

Area of Application:

  • Deep geological surveys
  • Glacier surveys and monitoring
  • Water level mapping
  • Alluvial deposits and layer mapping
  • Dam structural integrity surveys, embankment control


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Gekko-80 is a compact, lightweight and ultra-wide band ground penetrating antenna for a very high radio frequency band. This antenna, with its good penetration and signal to noise ratio, is an example of the fact that deep penetration and good resolution can be achieved at once. It is therefore ideal for applications that require deep penetration and high resolution, while still having an easily maneuverable GPR system. Examples of such applications are water level mapping, dam structural integrity surveys and more.

The precise design of the outer shell of Gekko-80 provides a stable construction that doesn’t tip and withstands the challenges that will be presented by the outer environment.

Gekko-80 is fully compatible with the rest of the Geoscanners equipment. It is easily mounted on a drone or the GST-806 cart, designed specifically to be used on cars or other vehicles, or with the SVC-820 cart(standard 4 wheel cart).

Just as with the rest of the Geoscanners antennas, Gekko-80 is designed with the end user in mind. It can be used in both monostatic mode or in bistatic mode. Depending on which mode is desirable by the user, the antenna comes equipped with top of the line Geoscanners plug-in electronics; TR-501 for monostatic mode or a combination of RX-501 and VHT-501 for bistatic mode. By including the transceivers in the antenna, we made sure that the end user receives a highly integrated device with all the matching already made to give the best possible results.

Mechanical and Environmental Specifications

Dimensions LxWxD (mm/inches) Weight (kg/pounds)
Fastening points LxW (mm/inches) Ingress Protection*

Operating Temperature (°C / °F)** Relative Humidity (%)

*TR-501 attached
** Antenna only, for the electronics refer to the appropriate datasheet.

1375x120x222 / 54×4.7×8.7 3.3 / 7.2
260×60 / 10.23×2.36

from -30 to +75 /from 14 to +104 99 (NC)

Electrical Specifications

Antenna Type
Shield Type
Feed point impedance (Ohms)
Antenna Bandwidth (at 10dB)
Antenna Center Frequency (Mhz at 10dB BW) Front to back ratio (dB)
Gain (dB)

* This data is preliminary based on limited amount of units

Wu-King Inverted Folded Bowtie Unshielded

80 0 2

Recommended Specifications

Pulse repetition Frequency, PRF (kHz) Scan Rate, Scans/Second
Range (ns), (depends on soil penetration) Low Pass Filter Cut-Off Frequency (MHz) High Pass Filter Cut-Off Frequency (MHz) Gain

Distance from surface (m / feet)

256 – control unit maximum 40
Adjust to 75% Swing
0 – 15 / 0 – 49.2


• GST-806 Car survey trailer
• SVC-820 Standard 4 wheel cart
• K-100B Adapter for SVC-820
• ASH-822 Hand carrier for one Gekko antenna

*Accessories are not included


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