Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7TDC callsign genealogy
Currently held by KRUGER, A 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 K7TDC's current licensee, walking backwards.
- Cole, Theodore DORgranted 2017-03-15cancelled 2017-04-22
Successor callsigns
Callsigns held now by people who previously held K7TDC.
- KRUGER, A JAZgranted 2011-09-27cancelled 2023-09-28
All historical holders
Every license row we've seen with the callsign K7TDC, oldest first.
- KRUGER, A J AZ2010-03-06 → cancelled 2011-09-27
- Cole, Theodore D OR2017-04-22 active