Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1GMC callsign genealogy
Currently held by Clifford, Graham 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 W1GMC's current licensee, walking backwards.
- Clifford, Graham MCTgranted 2017-07-13cancelled 2017-08-08
Successor callsigns
Callsigns held now by people who previously held W1GMC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1GMC, oldest first.
- MAC DONALD, IAN M MA1996-09-09 → cancelled 2008-09-10
- Clifford, Graham M CT2017-08-08 active