Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4NSF callsign genealogy
Currently held by National Science Foundation Amateur Radio Club
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 K4NSF's current licensee, walking backwards.
- KG4ZNEcancelledNational Science Foundation Amateur Radio ClubVAgranted 2003-04-08cancelled 2003-05-24
Successor callsigns
Callsigns held now by people who previously held K4NSF.
No current licensee on record previously held this callsign.