Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KS4JK callsign genealogy
Currently held by FRAZER JR, ALEXANDER
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 KS4JK'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 KS4JK.
- FRAZER JR, ALEXANDERFLgranted 1997-11-25cancelled 1998-01-14