Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0WO callsign genealogy
Currently held by ZIELINSKI, DONALD P
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 K0WO's current licensee, walking backwards.
- Woodward, Martin LKSgranted 1999-04-26cancelled 2001-04-06
Successor callsigns
Callsigns held now by people who previously held K0WO.
- K5FJactiveTHE BIGHORN MUSEUM OF AMATEUR RADIOCOgranted 2018-10-23
All historical holders
Every license row we've seen with the callsign K0WO, oldest first.
- Woodward, Martin L KS2021-06-10 active
- ZIELINSKI, DONALD P— → cancelled 1998-10-29