Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1DMB callsign genealogy
Currently held by Berrisford, Douglas M
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 K1DMB's current licensee, walking backwards.
- Grill, Jonathan ANJgranted 2016-07-13cancelled 2026-04-17
Successor callsigns
Callsigns held now by people who previously held K1DMB.
- Grill, Jonathan ANJgranted 2026-05-27
All historical holders
Every license row we've seen with the callsign K1DMB, oldest first.
- Berrisford, Douglas M CT2014-03-29 → cancelled 2026-03-31
- Grill, Jonathan A NJ2026-04-17 → cancelled 2026-05-27