Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4OBX callsign genealogy
Currently held by FESSENDEN AMATEUR RADIO SOCIETY
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 K4OBX's current licensee, walking backwards.
- KG4EFIcancelledFESSENDEN AMATEUR RADIO SOCIETYNCgranted 1999-07-29cancelled 1999-10-20
Successor callsigns
Callsigns held now by people who previously held K4OBX.
No current licensee on record previously held this callsign.