RESOLVE Products

Antenna and Receiver Systems

The RESOLVE suite of antennas caters for all operational deployments from the dismounted soldier to static operations.

QuadTac and QuadTac Mini Antennas  

The QuadTac antennas provide 2-channel intercept and Direction Finding capability for a RESOLVE system. Specifically designed for On-the-March operations, the antenna can operate with the array elements extended for maximum sensitivity, or closed to reduce the visual signature.

  • Low visual signature – QuadTac Mini has reduced height; the array elements in the QuadTac can be closed and still maintain intercept and DF capability
  • Rapidly deployable – lightweight, compact folding design (QuadTac)
  • Bearing Reference – built-in electronic compass provides absolute or relative Lines of Bearing
  • Flexible – manpack, tripod or vehicle mounted
  • Accurate – Built-in GPS provides accurate antenna location and system timing
  • Modular – Integrates with MicroQuad antenna subsystem

Specification Summary

  QuadTac QuadTac Mini
Frequency Range 30 MHz – 3 GHz 30 MHz – 750 MHz
Weight 2.7 Kg 1.6 Kg
Size Closed: 735 mm (h) x 105 mm (d) Deployed: 735mm (h) x 305 mm (d) 421 mm(h) x 122 mm (d)
Deployment Time 90s n/a

The MicroQuad antenna is typically used in conjunction with the QuadTac where it provides a base for the QuadTac. It can also be operated in isolation if only HF spectrum monitoring is required.

  • Low visual signature
  • Rapidly deployable
  • Lightweight, compact folding design
  • Integrated GPS antenna
Parameter Value
Frequency Range 2 – 100 MHz
Weight 2.5Kg
Size (Deployed) 650(h) mm x 1250 (w&d) mm

The Quadrant antenna provides detection of frequencies at the lower end of the HF spectrum (up to 32MHz) and is the largest and most accurate in the RESOLVE antenna range. It is ideal for Semi-Static configurations where it can be quickly deployed. When collapsed the Quadrant antenna fits into a custom carry bag and is easily carried by two men.


  • Detects frequencies at the lower end of the HF spectrum.
  • Greatest accuracy of all the antennas in the range.
  • Compact folding design which can be deployed in 90 seconds
Parameter Value
Deployment Time 90s
Frequency Range 1 – 30 MHz
Weight 35 Kg
Size (Deployed) 2.15m x 2.15m x 6m

The VQuad can be mast mounted, radome protected, and elevated up to seven meters or mounted permanently onto any platform. VQuad is based on the field proven and award winning QuadTac, however, there is no requirement for the dipole arms to close which allows for larger dipole elements to be used. This provides increased sensitivity at the lower operating frequencies.

Parameter Value
Frequency Range 30 MHz – 3 GHz
Mast Sensor  

The RESOLVE Mast Sensor has been developed for use on large masts (7m - 50m). This configuration houses the RESOLVE AGS unit, switch box and VQuad within the Radome. Digitising at the antenna allows for increased height while avoiding RF loss on the cable.

An optional addition to the Mast Sensor is the MastQuad. MastQuad provides high sensitivity, seamless coverage from 20MHz to 3GHz. The folding dipole design is easy to erect and provides increased sensitivity and DF accuracy at the lower operating frequencies.

Parameter Value
Frequency Range 30 MHz – 3 GHz
Acquisition and Geolocation Sensor (AGS)  

A wideband sensor for the intercept and geolocation of emitters from HF to UHF.

The Acquisition and Geolocation Sensor (AGS) is a dual channel, wideband receiver, optimised to support the intercept and geolocation of modern commercial waveforms such as PMR, GSM and satellite-phones. It provides continuous coverage from 100kHz to 3GHz and has a wideband stare capability to intercept frequency hopping signals and civil waveforms.


  • Wideband coverage with dual coherent receivers for DF
  • 40MHz wideband stare
  • Wideband stepped stare architecture – fast spectrum survey (option: dual-channel for wideband stepped stare DF capability)
  • Integrated GPS provides location, clock conditioning (for accurate frequency tuning) and time-stamping for signal event correlation and TDOA geolocation applications
  • Standard interface – USB2.0
  • Simultaneous intercept and DF – monitoring, DF and display of four tuned channels (narrowband digital drop receivers)
  • Man-portable – single power supply, small size, low weight
  • Software defined architecture – receiver control, signal demodulation and analysis implemented on laptop
  • Frequency hopping signal DF (option)
  • Easy configuration – Windows ®based GUI (RTSAN)
  • Network enabled – AGS units interconnect using a standard IP network via software applications (RTSAN and RTMIS)

Specification Summary

Parameter Value
Channels 2
Frequency Range 100kHz – 3GHz
Wideband Stare 40MHz
Scan Rate 1.5GHz/s
Weight 2.65Kg
Dimensions 270mm x 175mm x 85mm


The software interface provides operators with intercept data in real-time.

The RESOLVE EW Manpack is controlled using the ruggedised laptop running a suite of intuitive, integrated applications which enables the operator to execute complex tasks. The Mission Information System provides a dynamic and immediate operating picture presenting the intelligence in a format that is easily interpreted.


  • Intuitive interface
  • Powerful MIS
  • Wide and narrow band survey
  • Recording for offline analysis and playback
  • Networked Ops (chat, file transfer, event sharing)
  • Position fix of intercepted signals
  • Running fix
  • Civil waveform capable
  • Screenshots
  • The RESOLVE signals control and analysis software package (left)
  • The RESOLVE mission information system displaying running fix solutions (right)