Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9SOK callsign genealogy
Currently held by Sok, Joseph S
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 K9SOK's current licensee, walking backwards.
- Sok, Joseph SMTgranted 2015-07-31cancelled 2015-09-15
Successor callsigns
Callsigns held now by people who previously held K9SOK.
No current licensee on record previously held this callsign.