Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3DMF callsign genealogy
Currently held by Smith, Ryan W
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 K3DMF's current licensee, walking backwards.
- Smith, Ryan WPAgranted 2005-11-10cancelled 2009-07-24
Successor callsigns
Callsigns held now by people who previously held K3DMF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K3DMF, oldest first.
- Lindahl, Richard C PA2007-08-02 → cancelled 2009-05-13
- Smith, Ryan W PA2019-04-29 active