Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5SFR callsign genealogy
Currently held by HAEFELE, DAVID M
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 W5SFR's current licensee, walking backwards.
- YANCEY, ROBERT LNMgranted 2017-02-22cancelled 2020-01-14
Successor callsigns
Callsigns held now by people who previously held W5SFR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5SFR, oldest first.
- HAEFELE, DAVID M TX1988-02-23 → cancelled 2000-02-24
- YANCEY, ROBERT L NM2020-01-14 active