Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0KRK callsign genealogy
Currently held by Halsey, Kirk M
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 W0KRK's current licensee, walking backwards.
- Halsey, Kirk MCOgranted 2013-04-26cancelled 2018-04-03
Successor callsigns
Callsigns held now by people who previously held W0KRK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0KRK, oldest first.
- GRONNEBERG, IRVIN C MT2005-11-11 → cancelled 2018-02-10
- Halsey, Kirk M CO2018-04-03 active