RHOTHETA is proud to equip the United States Coast Guard with the RT-500-M radio direction finder. Since 2019, RHOTHETA has been supplying the main contractor L3 Harris with this device for integration into mission systems on board the new Sentinel-class Fast Response Cutter.

The Royal National Lifeboat Institution crews have saved over 142,200 lives in and around the UK coasts since 1824. RHOTHETA Elektronik GmbH supports the work of the rescue teams by supplying SAR radio direction finding systems.

The Dutch pilots contribute to the safe and fast navigation of ships to and from the Dutch ports and the Flemish ports on the Scheldt. Each year they support more than 90,000 ships. Loodswezen wants to be a leader by excelling in terms of service delivery, training and education, efficiency, technology and customer satisfaction. Well-trained controllers work closely with other staff to ensure safe and efficient operations under all circumstances.
Loodswezen has been using RHOTHETA PLBs and direction finders since 2009. The devices are very reliable and are used in various MOB situations.

Open Nederlands Loodswezen BV website

The Royal Netherlands Sea Rescue Institution (KNRM) is a registered charity that saves lives at sea and in coastal waters in the Netherlands. The KNRM is a foundation supported entirely by voluntary contributions, inheritances and legacies. The foundation receives no financial support from the government.
Lifeboat crew members are professionally trained volunteers who are available 24 hours a day.

Open KNRM Netherlands website

In 2019, the Canadian Coast Guard placed an order with Seacoast Marine Electronics, a RHOTHETA dealer based in Halifax, Nova Scotia. As a result, the Canadian Coast Guard will replace aging direction finders across its fleet with the RT-500-M radio direction finder within two to three years.


Since 2019, we have been using the RHOTHETA RT-400 portable radio direction finding system to conduct search and rescue missions at Paris-Charles De Gaulle Airport. Compared to our old devices, the RT-400 halves the search time for a downed plane. This is a revolution and makes us much more efficient in rescuing passengers near an airport.


The Swedish Police operates 7 Bell 429 helicopters with RHOTHETA RT-600 A radio direction finder systems. The RT-600 systems ensure that emergency signals can be located quickly in an uncomplicated manner.

RHOTHETA Elektronik GmbH has been supplying the Civil Air Patrol in the USA with RT-600 A Direction Finder systems since the year 2000. The CAP is responsible for overland SAR throughout the United States, making a valuable contribution to rescue operations and disaster response.

Air Traffic Control

In 2015, 19 airfields in South Africa were equipped with RHOTHETA RT-1000 ATC radio direction finders (VDF). The project ended successfully in September 2015 with training for the end customer.

In 2016, an RT-1000 MC VDF system was delivered to Leonardo for the ATC project in Dakar/Senegal. The project was successfully completed in January 2017 with the acceptance of Leonardo’s installation by the end customer.