Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4DFS callsign genealogy
Currently held by Straining, David F
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 K4DFS's current licensee, walking backwards.
- Straining, David FFLgranted 2019-05-24cancelled 2019-06-15
Successor callsigns
Callsigns held now by people who previously held K4DFS.
No current licensee on record previously held this callsign.