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G9B12
What is the approximate length for a 1/4 wave monopole antenna cut for 28.5 MHz?
Pick an answer to check it.
Answer: A. 8 feet
Quarter-wave length in feet = 234 / frequency in MHz = 234 / 28.5 = 8.2 feet, or about 8 feet.
Tip: Quarter-wave feet = 234 / MHz.