Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4FO callsign genealogy
Currently held by Sample, L Palmer
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 K4FO's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K4FO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4FO, oldest first.
- TYLER, RICHARD S FL1995-02-22 → cancelled 2007-02-23
- Sample, L Palmer FL2017-01-04 active