Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K9DFS callsign genealogy
Currently held by SMITH, DIRK 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 K9DFS's current licensee, walking backwards.
- SIEKERKOTTE SMITH, DIRK FILgranted 2007-04-25cancelled 2015-02-03
Successor callsigns
Callsigns held now by people who previously held K9DFS.
- SMITH Mr., DIRK FILgranted 2017-11-21