© 2020 Radiodetection Ltd 27
One person Nulling Out technique:
Figure 5.6 Nulling Out - Single person sweep
1. Lay the transmitter on its side using the side
support arm.
2. Sweep the area around the transmitter with the
receiver at least 10m/30’ from it.
3. Reposition the transmitter at 5m/15’ intervals
around the area and repeat step 2
4. Stop when there is a response
5. Pinpoint and mark any lines
6. Trace the lines out of the area