Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7TDI callsign genealogy
Currently held by O'NEILL, RYAN
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 K7TDI's current licensee, walking backwards.
- O'NEILL, RYAN PMTgranted 2012-03-20cancelled 2012-04-10
Successor callsigns
Callsigns held now by people who previously held K7TDI.
No current licensee on record previously held this callsign.