Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC3TDO callsign genealogy
Currently held by Polstra Jr, Philip A
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 KC3TDO'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 KC3TDO.
- Polstra Jr, Philip APAgranted 2021-12-31