Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD1USA callsign genealogy
Currently held by Ramsay III, James 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 KD1USA's current licensee, walking backwards.
- Ramsay III, James MCOgranted 2018-08-13cancelled 2018-09-25
Successor callsigns
Callsigns held now by people who previously held KD1USA.
- Ramsay III, James MINgranted 2025-02-25