Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6BTO callsign genealogy
Currently held by ADAMS, HERBERT R
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 K6BTO's current licensee, walking backwards.
- KELLY, BRUCE LCAgranted 2013-10-18cancelled 2013-11-26
Successor callsigns
Callsigns held now by people who previously held K6BTO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6BTO, oldest first.
- ADAMS, HERBERT R CA2001-02-07 → cancelled 2013-04-24
- KELLY, BRUCE L CA2013-11-26 → cancelled 2026-03-07