Question
What procedure may be used by Volunteer Monitors to localize a station whose continuous carrier is holding a repeater on in their area?
Answer Options
- A) Compare vertical and horizontal signal strengths on the input frequency
- B) Compare beam headings on the repeater input from their home locations with that of other Volunteer Monitors
- C) Compare signal strengths between the input and output of the repeater
- D) All these choices are correct
Correct Answer: B
Explanation
Localizing a source of interference, such as a station that is illegally holding a repeater open with a continuous carrier, is accomplished through direction-finding (DF) techniques. When multiple Volunteer Monitors (VMs) are involved, they can each take a beam heading (azimuth reading) on the source of the repeater’s input signal from their respective home locations.
By plotting these multiple bearings on a map, the point where the bearings intersect will typically pinpoint the location of the interfering station. This triangulation method is a highly effective way for the VMP to gather the evidence needed to identify and address the rules violator.
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