Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W0KRF callsign genealogy
Currently held by NELMS, CARL L
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 W0KRF's current licensee, walking backwards.
- Fretwell, Richard JMOgranted 2009-07-14cancelled 2009-12-08
Successor callsigns
Callsigns held now by people who previously held W0KRF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W0KRF, oldest first.
- NELMS, CARL L KS1995-08-14 → cancelled 2007-08-15
- FRETWELL, RICHARD J MO2019-09-17 active