Basic Qualification · B-008 Interference and suppression · B-008-002-002
What should be done if a properly operating amateur radio station is the cause of interference to a nearby telephone?
- AMake internal adjustments to the telephone equipment
- BInstall a modular plug-in telephone RFI filter close to the telephone device
- CGround and shield the telephone distribution amplifier
- DStop transmitting whenever the telephone is in use
Correct answer: B — Install a modular plug-in telephone RFI filter close to the telephone device. From the official ISED question bank, verified word for word.
Why
The best step is to install a modular plug-in telephone RFI filter close to the telephone device because this stops the radio frequency energy from entering the phone's wiring at the source. The full explanation — and one for every question — is in Pro.
Practise this section
Interference and suppression is section B-008 of the Basic exam: When things interfere: harmonics, overload, RFI to and from your station, filters, ferrites and how to fix the neighbour's TV.
Drill B-008 — free, no account