Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4SOF callsign genealogy
Currently held by EICHOLD III, SAMUEL
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 K4SOF's current licensee, walking backwards.
- EICHOLD III, SAMUELTNgranted 2014-12-15cancelled 2015-01-06
Successor callsigns
Callsigns held now by people who previously held K4SOF.
No current licensee on record previously held this callsign.