Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K7RSO callsign genealogy
Currently held by LEDFORD, DALLAS B
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 K7RSO's current licensee, walking backwards.
- Ortlinghaus, Randall SAZgranted 2007-10-10cancelled 2007-11-06
Successor callsigns
Callsigns held now by people who previously held K7RSO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7RSO, oldest first.
- LEDFORD, DALLAS B WA1997-12-08 → cancelled 2002-10-05
- Ortlinghaus, Randall S UT2017-09-06 active