Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KK7RTO callsign genealogy
Currently held by BALDWIN, DAVID 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 KK7RTO's current licensee, walking backwards.
- BALDWIN, DAVID JWAgranted 2022-11-23cancelled 2023-03-31
Successor callsigns
Callsigns held now by people who previously held KK7RTO.
No current licensee on record previously held this callsign.