Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9DUG callsign genealogy
Currently held by COOLEY, CARROLL M
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by K9DUG's current licensee, walking backwards.
- Sass, DouglasFLgranted 2024-06-14cancelled 2024-07-06
Successor callsigns
Callsigns held now by people who previously held K9DUG.
- Perucca, Douglas EAKgranted 2022-03-25
All historical holders
Every license row we've seen with the callsign K9DUG, oldest first.
- COOLEY, CARROLL M IL1994-03-29 → cancelled 2006-03-30
- Perucca, Douglas E AK2018-09-27 → cancelled 2022-03-25
- Sass, Douglas FL2024-07-06 active