G4C - Amateur Radio Practices
General Class
Interference: identification, filters, ferrites, common mode, bypass capacitors
12 questions
Which of the following might be useful in reducing RF interference to audio frequency circuits?
Which of the following could be a cause of interference covering a wide range of frequencies?
What sound is heard from an audio device experiencing RF interference from a single sideband phone transmitter?
What sound is heard from an audio device experiencing RF interference from a CW transmitter?
What is a possible cause of high voltages that produce RF burns?
What is a possible effect of a resonant ground connection?
Why should soldered joints not be used in lightning protection ground connections?
Which of the following would reduce RF interference caused by common-mode current on an audio cable?
How can the effects of ground loops be minimized?
What could be a symptom caused by a ground loop in your station’s audio connections?
What technique helps to minimize RF “hot spots” in an amateur station?
Why must all metal enclosures of station equipment be grounded?