Applying a signal
Airborne signal
5 things filed against this subject, in every format the Bureau holds.
Videos
Video
The Airborne Signal Check, On Site
Lifting the CAT and pointing it at the Genny to see whether what you are hearing is coming through the air rather than the ground.
Watch 0:22 →Video
Checking for Airborne Signals
Scan across the assumed route and prove the signal is coming from the ground, not through the air. The false trace that catches people out.
Watch 0:39 →Video
Induction: What It Is Good At, and Its Limits
What induction is genuinely good at, what it cannot follow, and the airborne trap that has you tracing the wrong service entirely.
Watch 2:53 →Video
The Two-Man Parallel Sweep and the Airborne Check
One on the Genny, one on the CAT, ten metres apart. The sweep for cables you cannot connect to, and the airborne check that keeps the trace honest.
Watch 3:27 →In the handbookWhole handbook →