Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6SDF callsign genealogy
Currently held by FRIEDMAN, STANLEY D
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 K6SDF's current licensee, walking backwards.
- FRIEDMAN, STANLEY Dcancelled 1998-01-07
Successor callsigns
Callsigns held now by people who previously held K6SDF.
No current licensee on record previously held this callsign.