Applying a signal

Signal nulling

3 things filed against this subject, in every format the Bureau holds.

Videos

Masked Cables: When One Signal Hides Another

A strong signal can hide a second cable or pipe running close by. How to recognise when one reading might be two services.

Nulling out puts a known signal to sleep so you can hear what is underneath: the dead zone on the display, and the HV below the LV.