 |
The Golden
Rule of frequency selection says Use the lowest
frequency that will produce a traceable signal over
the distance you need to cover.
| |
Advantages |
Disadvantages |
Low Frequencies |
- Helps isolate the target line = Less Bleed-Over.
- Travel further down low resistance or uninsulated
lines.
- Work well on larger diameter conductors.
They make locating easier because they typically
stay on one conductor, reduce possibility of signal
distortion and require fewer hook ups to trace
a longer line. |
Can’t overcome high resistance, i.e.
Stubs, Insulated joints, Dry/Sandy soil, no
far end ground, etc.
Not useful for blind searches/sweeps when
you just want to identify the existence of any
conductors in an area.
Not useful for inductive locating.
Susceptible to power line interference
Lowers receivers sensitivity
|
High Frequencies |
Can overcome high resistance, i.e. Stubs,
insulated joints, Dry/Sandy soil, no far end
ground, etc.
Useful for blind searches/sweeps when you
just want to identify the existence of any conductors
in an area.
Useful for inductive locating.
|
Can Bleed-Over onto other conductors so
you cannot be certain if you are tracing your
target line.
Won’t travel far down a line.
Does not work as well on larger diameter conductors.
They make locating possible in situations that
have high resistance but they can increase signal
distortion and confusion in congested areas.
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