Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W8KOA callsign genealogy
Currently held by Haas, Jeffrey S
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 W8KOA's current licensee, walking backwards.
- Haas, Jeffrey SOHgranted 2014-08-07cancelled 2014-09-20
Successor callsigns
Callsigns held now by people who previously held W8KOA.
- Haas, Jeffrey SOHgranted 2024-12-17
All historical holders
Every license row we've seen with the callsign W8KOA, oldest first.
- GARRA, LEON B OH1998-06-22 → cancelled 2010-06-23
- Haas, Jeffrey S OH2014-09-20 → cancelled 2015-01-10