Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5FS callsign genealogy
Currently held by SPENCER, FLOYD 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 K5FS's current licensee, walking backwards.
- MILLER, KEITHNMgranted 2022-03-03cancelled 2022-11-26
Successor callsigns
Callsigns held now by people who previously held K5FS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5FS, oldest first.
- SPENCER, FLOYD L TX1988-10-18 → cancelled 2000-10-19
- ASHURST, JOHN E TX2010-09-28 → cancelled 2022-11-08
- MILLER, KEITH NM2022-11-26 active