Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4TDY callsign genealogy
Currently held by FRADELLA, JOHN G
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 K4TDY's current licensee, walking backwards.
- FRADELLA, JOHN Gcancelled 1998-12-15
Successor callsigns
Callsigns held now by people who previously held K4TDY.
- FRADELLA, F JOHNSCgranted 2016-10-19