Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W5BRK callsign genealogy
Currently held by Martin, Katherine 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 W5BRK's current licensee, walking backwards.
- Martin, Katherine LOKgranted 2020-11-30cancelled 2020-12-29
Successor callsigns
Callsigns held now by people who previously held W5BRK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5BRK, oldest first.
- Barker, Ronald F TX2005-03-08 → cancelled 2017-03-09
- Martin, Katherine L OK2020-12-29 active