Radio Direction Finding (RDF) is a broad term that encompasses a variety of techniques for locating the source of radio transmissions. At SARC, we call it “fox hunting”, but the terms “bunny hunting” and “radio orienteering” are also commonly used. Regardless of what it is called, the methods are virtually identical to those used for identifying spurious RF emissions (RFI), sources of deliberate RF interference and even Emergency Locator Transmitters from downed aircraft.
Each year, the Surrey Amateur Radio Communications Society (SARC) hosts its popular Fox Hunt event in Crescent Park, South Surrey. Participants of all ages gather to test their radio direction-finding skills by locating several hidden 80-meter transmitters scattered throughout the park within the 2 hours allocated for the hunt.
SARC also sponsors 2m fox hunts from time to time, but this option requires the use of a handheld yagi antenna and a 2m receiver with offset attenuator. 2m transmissions are also more susceptible to reflections, which makes 2m a more complex challenge than 80m.
Known as the premier fox hunting event in the Lower Mainland, SARC’s hunt draws a diverse crowd—from seasoned amateur radio operators to curious newcomers. Armed with handheld receivers with directional antennas, teams compete to be the first to track down the elusive “foxes,” all while enjoying the scenic trails and natural beauty of Crescent Park.
SARC’s Fox Hunt promotes technical learning, outdoor activity, and community connection, making it a signature event on the local ham radio calendar.
This video shows the basic 80m direction-finding procedure using the popular and locally produced RX80M receiver designed by SARC member Les Tocko VA7OM. The RX80M can be purchased from membership@ve7sar.net.