Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K8SOB callsign genealogy
Currently held by Holbrook, Michael K
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 K8SOB's current licensee, walking backwards.
- Holbrook, Michael KWVgranted 2015-01-09cancelled 2018-03-06
Successor callsigns
Callsigns held now by people who previously held K8SOB.
No current licensee on record previously held this callsign.