Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WB8MMR callsign genealogy
Currently held by Southwest Columbus Ham Radio Club
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 WB8MMR's current licensee, walking backwards.
- KD8SWHcancelledSouthwest Columbus Ham Radio ClubOHgranted 2012-07-27cancelled 2013-01-01
Successor callsigns
Callsigns held now by people who previously held WB8MMR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WB8MMR, oldest first.
- KNIES, MICHAEL W OH2006-12-19 → cancelled 2012-07-24
- Southwest Columbus Ham Radio Club OH2023-07-18 active