Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1BDC callsign genealogy
Currently held by SANBORN, ROBERT G
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 W1BDC's current licensee, walking backwards.
- Coleman, Dustin PNHgranted 2016-03-11cancelled 2019-06-04
Successor callsigns
Callsigns held now by people who previously held W1BDC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1BDC, oldest first.
- SANBORN, ROBERT G NH2003-04-26 → cancelled 2015-04-28
- Coleman, Dustin P SD2019-06-04 active