Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC0TDS callsign genealogy
Currently held by Krassa, Robert F T
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 KC0TDS'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 KC0TDS.
- KRASSA, ROBERT F TCOgranted 2024-07-16