Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4SBN callsign genealogy
Currently held by RUHE, MICHAEL A
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 K4SBN's current licensee, walking backwards.
- RUHE, MICHAEL ANCgranted 2009-02-27cancelled 2011-10-04
Successor callsigns
Callsigns held now by people who previously held K4SBN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4SBN, oldest first.
- JONES, THEARTRIC OH1988-07-19 → cancelled 2000-07-20
- RUHE, MICHAEL A NC2021-08-02 active