In plain language: RFI is unwanted radio-frequency energy that reaches a receiver or electronic device through a radiated or conducted path; fixing it starts by identifying which path is active.
Why an operator notices it
The same word covers a noisy charger, a transmitting station entering speakers, and common-mode current returning through computer cables. Treating those as one problem wastes time.
Decisions that matter
- Separate receive interference from transmit-caused interference.
- Identify source, coupling path, and affected device.
- Preserve the working antenna configuration while testing suppression.
A useful field check
- Reproduce at low power or controlled receiver settings.
- Disconnect one nonessential path at a time.
- Place suppression at the point where unwanted current enters or leaves.
Common wrong turns
- Random ferrite placement.
- Random grounding wires.
- Declaring success after the symptom moves to another band.
Technical foundation
This lesson translates established transmission-line and antenna practice into a field decision. Use the current equipment datasheet and Chameleon product guide for changing loss, power, connector, installation, and compatibility limits.
