Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K5CFE callsign genealogy
Currently held by SIRMANS JR, CHARLES R
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 K5CFE's current licensee, walking backwards.
- Odenthal, Stephen CTXgranted 2022-02-07cancelled 2022-09-30
Successor callsigns
Callsigns held now by people who previously held K5CFE.
- SIRMANS JR, CHARLES RTXgranted 2000-09-06cancelled 2007-07-02
All historical holders
Every license row we've seen with the callsign K5CFE, oldest first.
- SIRMANS JR, CHARLES R TX1997-07-03 → cancelled 2000-09-06
- Odenthal, Stephen C TX2022-09-30 active