Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W3RUN callsign genealogy
Currently held by SLATKOFF, ROLAND
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 W3RUN's current licensee, walking backwards.
- Buddemeyer, Brian SPAgranted 2014-09-22cancelled 2015-11-13
Successor callsigns
Callsigns held now by people who previously held W3RUN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3RUN, oldest first.
- SLATKOFF, ROLAND MD2003-07-24 → cancelled 2015-10-20
- Buddemeyer, Brian S PA2025-08-19 active