Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9MRR callsign genealogy
Currently held by VOELKEL, OLIVER 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 K9MRR's current licensee, walking backwards.
- RINEHART, MICHAELILgranted 2022-03-28cancelled 2022-04-15
Successor callsigns
Callsigns held now by people who previously held K9MRR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K9MRR, oldest first.
- VOELKEL, OLIVER M VA1998-07-30 → cancelled 2010-07-31
- RINEHART, MICHAEL IL2022-04-15 active