Jefferson County International frequencies
Jefferson County International (0S9) in Port Townsend, WA has no control tower, so nobody is sequencing traffic here — you announce your own position on 123.0. Every frequency below is in the order you tune it. · Open on the map
All of Jefferson County International — runways, frequencies, charts and live weatherBefore taxi
- ASOS/AWOS 119.025
- 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 123.0
- 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.
- UNICOM 123.0
- A ground station run by the FBO rather than the FAA, for fuel, parking and airport services. Use it for services. Where the field has no separate CTAF, the same frequency doubles as the advisory frequency.
Departure & arrival Whidbey
- App/Dep 118.2
- One radar controller working both arrivals and departures — normal at a smaller TRACON. The same frequency takes your climb out and your inbound call.
What to say on 123.0
Nobody is sequencing traffic at 0S9, 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 — 123.0 is not unique to Jefferson County International.
- Inbound, 10 miles out
Jefferson traffic, Skyhawk one two three four five, one zero miles south, inbound landing runway 09, Jefferson.
- Entering the pattern
Jefferson traffic, Skyhawk one two three four five, entering left downwind runway 09, Jefferson.
- Before taking the runway
Jefferson traffic, Skyhawk one two three four five, departing runway 09, Jefferson.
Pattern direction is not always left here — check the 0S9 traffic pattern before you announce a leg. The Chart Supplement is authoritative if 0S9 publishes a call name that differs from the airport's. Full guidance →
Every 0S9 frequency, as one table
| ASOS/AWOS | 119.025 |
|---|---|
| CTAF | 123.0 |
| UNICOM | 123.0 |
| App/Dep | 118.2 |
Frequently asked
What is the CTAF at 0S9?
Jefferson County International is non towered. The common traffic advisory frequency is 123.0 — announce your position and intentions on entry and on each leg of the pattern.
What is the ASOS/AWOS frequency at 0S9?
ASOS/AWOS at Jefferson County International is 119.025. It is an automated broadcast, so there is no letter to report — just take the altimeter setting and wind.
What is the approach frequency for 0S9?
App/Dep for Jefferson County International is 118.2, working as "Whidbey". Call inbound for flight following or to begin an instrument approach.
More about 0S9
Frequencies from FAA NASR. For planning and education only; always verify against official sources.
Something here wrong or out of date? Report a data problem.