Pier 7 frequencies

Pier 7 (4MD) in Baltimore, MD has no control tower, so nobody is sequencing traffic here — you announce your own position on 123.025. Every frequency below is in the order you tune it. · Open on the map

All of Pier 7 — runways, frequencies, charts and live weather

Before taxi

ASOS/AWOS 133.45
An automated weather station reading the field conditions aloud — wind, visibility, ceiling, temperature and altimeter. It replaces ATIS at a field with no controller to record one. Get the altimeter setting before you descend below the transition altitude.

Taxi & takeoff

CTAF 123.025
The common frequency pilots use to announce themselves to each other at a field with no operating control tower. Nobody is controlling traffic — you are self announcing. Report your position and intentions on entry and on each leg of the pattern, and listen well before you transmit.

What to say on 123.025

Nobody is sequencing traffic at 4MD, so every call is you telling other aircraft where you are. Open and close with the field name so a pilot tuned to a shared frequency knows which airport you mean — 123.025 is not unique to Pier 7.

  • Inbound, 10 miles out Pier 7 traffic, Skyhawk one two three four five, one zero miles south, inbound landing, Pier 7.
  • Entering the pattern Pier 7 traffic, Skyhawk one two three four five, entering left downwind , Pier 7.
  • Before taking the runway Pier 7 traffic, Skyhawk one two three four five, departing , Pier 7.

Pattern direction is not always left here — check the 4MD traffic pattern before you announce a leg. The Chart Supplement is authoritative if 4MD publishes a call name that differs from the airport's. Full guidance →

Every 4MD frequency, as one table
ASOS/AWOS133.45
CTAF123.025

Frequently asked

What is the CTAF at 4MD?

Pier 7 is non towered. The common traffic advisory frequency is 123.025 — announce your position and intentions on entry and on each leg of the pattern.

What is the ASOS/AWOS frequency at 4MD?

ASOS/AWOS at Pier 7 is 133.45. It is an automated broadcast, so there is no letter to report — just take the altimeter setting and wind.