Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7CSF callsign genealogy
Currently held by BARNHART, DAVID
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 W7CSF's current licensee, walking backwards.
- BARNHART, DAVIDMTgranted 2024-09-07cancelled 2024-09-27
Successor callsigns
Callsigns held now by people who previously held W7CSF.
No current licensee on record previously held this callsign.