Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4FSW callsign genealogy
Currently held by Arnold, David L
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 W4FSW's current licensee, walking backwards.
- Arnold, David LMIgranted 2012-05-25cancelled 2019-02-01
Successor callsigns
Callsigns held now by people who previously held W4FSW.
No current licensee on record previously held this callsign.