Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB0YDF callsign genealogy
Currently held by Zellman, David A
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 WB0YDF's current licensee, walking backwards.
- KF0MSMcancelledSilver Creek QRP ClubMNgranted 2023-05-19cancelled 2023-11-07
Successor callsigns
Callsigns held now by people who previously held WB0YDF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB0YDF, oldest first.
- Zellman, David A MN2018-08-31 → cancelled 2022-05-06
- Silver Creek QRP Club MN2023-11-07 active