Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K8BOA callsign genealogy
Currently held by ROZEMA, JACK R
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 K8BOA's current licensee, walking backwards.
- ROZEMA, WILLIAM JMIgranted 2002-01-24cancelled 2008-08-26
Successor callsigns
Callsigns held now by people who previously held K8BOA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K8BOA, oldest first.
- ROZEMA, JACK R MI2006-11-14 → cancelled 2008-05-05
- ROZEMA, WILLIAM J MI2018-11-06 active