Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0YS callsign genealogy
Currently held by Tracy, Daniel W
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 K0YS's current licensee, walking backwards.
- Tracy, Daniel WIAgranted 2021-06-29cancelled 2022-08-30
Successor callsigns
Callsigns held now by people who previously held K0YS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K0YS, oldest first.
- SHARP, BOB W MO2010-06-15 → cancelled 2022-08-06
- Tracy, Daniel W IA2022-08-30 active