Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0KOA callsign genealogy
Currently held by HALFPAP, BERT 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 W0KOA's current licensee, walking backwards.
- Philip, Roger EMNgranted 2005-03-16cancelled 2005-06-18
Successor callsigns
Callsigns held now by people who previously held W0KOA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0KOA, oldest first.
- HALFPAP, BERT A CO1987-09-22 → cancelled 1999-09-23
- Philip, Roger E MN2015-04-11 active