Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0YXY callsign genealogy
Currently held by Ulrich, Donald L
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 K0YXY's current licensee, walking backwards.
- Ulrich, Donald LMOgranted 2020-01-14cancelled 2020-02-28
Successor callsigns
Callsigns held now by people who previously held K0YXY.
No current licensee on record previously held this callsign.