Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD2NL callsign genealogy
Currently held by Ryan, John S
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 KD2NL's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KD2NL.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD2NL, oldest first.
- Ryan, John S FL2003-10-03 → cancelled 2008-07-11
- RYAN, JOHN S NY2018-06-27 active