Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB1DC callsign genealogy
Currently held by Cottington, David 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 AB1DC's current licensee, walking backwards.
- Cottington, David MIAgranted 2024-08-14cancelled 2026-01-09
Successor callsigns
Callsigns held now by people who previously held AB1DC.
- Danehy, Timothy PNCgranted 2024-04-04
All historical holders
Every license row we've seen with the callsign AB1DC, oldest first.
- Danehy, Timothy P CT1996-09-04 → cancelled 2004-04-09
- Cottington, David M IA2026-01-09 active