Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KS4HF callsign genealogy
Currently held by TONGTA, RANGSAN
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 KS4HF's current licensee, walking backwards.
- TONGTA, RANGSANIAgranted 2013-09-23cancelled 2016-12-06
Successor callsigns
Callsigns held now by people who previously held KS4HF.
No current licensee on record previously held this callsign.