In Radio Mode, the Locator detects signals from various radio transmitters. These signals flow through the ground
and will tend to follow the line of least resistance such as a buried metallic service. When this happens the service
can often be detected by using the Locator in Radio Mode.
Limitations of Radio Mode
l Not all services will be detectable in Radio Mode.
l A strong radio signal present on one service may be masking a weaker radio signal present on an adjacent service.
l It is not normally possible to determine what the service is in Radio Mode, only it’s position.
l Radio signals do not favour one utility over another.
l The depth of the buried service cannot be judged by the strength of the radio signal alone.
l Normally it is only possible to detect radio signals present on services up to 2 m (6’6”) deep.
l A short service may not have enough signal to be detected.
Locator Operating Modes: Radio Mode
NOTE Locators can only detect services radiating a detectable electromagnetic signal.
There may be some services that do not radiate these signals and cannot be located.
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WARNING Most buried metallic services not found in Radio Mode should be detectable by using Generator Mode
with the Signal Generator/ Transmitter.