The HELZEL-OTHR and WERA HF radar technology can be used for a variety of oceanographic and coastal surveillance applications.

System Integrators have the advantage to be able to offer one tool for different applications by using the HELZEL radar units in combination with their own system components or software tools.

The WERA and OTHR  can be delivered without the HELZEL brand name and the radar experts of our partners are welcome to be trained at our facility.  

Recommended Hardware Configurations 

for System Integrators

Helzel OTHR for ship detection and tracking


  • Vessel tracking up to 200 nautical miles to protect the EEZ
  • Multi frequency options enhancing the probability of detection
  • Frequency management incl. frequency hopping
MIMO options to get high resolution with shorter arrays
  • Multi sensor tracker implemented at site
Suspicious target identification

WERA for long ranges >300km
ITU frequencies band 4.4, 5.2 and 9.3MHz


  • Current measurements for ranges up to 300km
  • Wave measurements of Hs >1m for ranges of up to 100km
  • Perfectly suited for long range current measurements
  • Typical range resolution of 3km
  • The quality checked data from a single station can be used for assimilation into models
Suitable for Tsunami detection

WERA Long Range

[requires email for download]

Tsunami Warning System
for ranges up to 200km                          


  • Each single WERA system can be used for Tsunami Detection
  • The array type antenna systems  ensure high performance and reliability
  • The fast real time processing on-site calculates the actual Tsunami probability
  • The detection range need to be adapted to the distance of the continental shelf edge
  • Best suited for 9 to 26MHz systems

Tsunami Detection

[requires email for download]

Note: this is a selection of our product range. To view more details, click on one of the product cards above.

If you want to get an overview on more of our product configurations, see Radar-Systems/ Overview instead.

Thomas Helzel, Shareholder
+49 4191 95200‬

Are you interested in a special configuration ...

... of radar systems? We will be here to help you. If you like, just let's have a call or contact me via email to see if we can help to find a solution to your specific needs.