Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WK1D callsign genealogy
Currently held by CARR, MARTIN J
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 WK1D's current licensee, walking backwards.
- Ayres, Geoffrey KMAgranted 2011-11-28cancelled 2012-10-10
Successor callsigns
Callsigns held now by people who previously held WK1D.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WK1D, oldest first.
- CARR, MARTIN J CT2001-02-17 → cancelled 2012-09-19
- Ayres, Geoffrey K MA2022-08-26 active