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Union County Airport frequencies

Radio frequencies for Union County Airport (MRT · KMRT) in Marysville, OH — tower, ground, ATIS, CTAF, and approach/departure for your radio setup.

Tower & ground

ASOS/AWOS126.5
CTAF123.05
UNICOM123.05

Approach & departure Columbus

App/Dep125.95 · initial contact
By procedure & sector (1 more)
317.775APCH/P DEP/P IC

Frequencies from FAA NASR. For planning and education only; always verify against official sources.