Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4DSF callsign genealogy
Currently held by FOSDICK, DAVID 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 N4DSF's current licensee, walking backwards.
- FOSDICK, DAVID SVAgranted 2010-09-30cancelled 2013-03-19
Successor callsigns
Callsigns held now by people who previously held N4DSF.
No current licensee on record previously held this callsign.