Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9YMO callsign genealogy
Currently held by KOREN, JULIAN J
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 W9YMO's current licensee, walking backwards.
- Koren, Julian JFLgranted 2018-11-15cancelled 2018-12-18
Successor callsigns
Callsigns held now by people who previously held W9YMO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9YMO, oldest first.
- KOREN, JULIAN J FL1999-01-06 → cancelled 2011-01-07
- Koren, Julian J FL2018-12-18 active