Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD2SYB callsign genealogy
Currently held by Crowley, Michael 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 KD2SYB's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KD2SYB.
- Crowley, Michael JNYgranted 2019-11-19