Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N0BCD callsign genealogy
Currently held by AMDAHL, BERNHARD 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 N0BCD's current licensee, walking backwards.
- SANFORD, WILLIAM MMNgranted 2016-07-06cancelled 2023-05-05
Successor callsigns
Callsigns held now by people who previously held N0BCD.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0BCD, oldest first.
- AMDAHL, BERNHARD M OR2007-02-27 → cancelled 2019-03-07
- SANFORD, WILLIAM M MN2023-05-05 active