Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7DXR callsign genealogy
Currently held by Selthofer, Mark A
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 K7DXR's current licensee, walking backwards.
- SELTHOFER, MARK AWAgranted 1993-10-19cancelled 2000-09-26
Successor callsigns
Callsigns held now by people who previously held K7DXR.
No current licensee on record previously held this callsign.