Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC8ADB callsign genealogy
Currently held by GUY, JEFFREY S
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 KC8ADB's current licensee, walking backwards.
- Brewer, AaronOHgranted 2016-11-01cancelled 2019-09-10
Successor callsigns
Callsigns held now by people who previously held KC8ADB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC8ADB, oldest first.
- GUY, JEFFREY S OH1995-06-20 → cancelled 2007-06-21
- Brewer, Aaron OH2019-09-10 active