Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KM4KF callsign genealogy
Currently held by HERNANDEZ, RICHARD A
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 KM4KF's current licensee, walking backwards.
- SIMPSON, JEFF LTNgranted 2003-04-29cancelled 2006-02-18
Successor callsigns
Callsigns held now by people who previously held KM4KF.
- HERNANDEZ, RICHARD AFLgranted 2022-09-20
All historical holders
Every license row we've seen with the callsign KM4KF, oldest first.
- HERNANDEZ, RICHARD A FL1998-08-10 → cancelled 2002-12-18
- SIMPSON, JEFF L TN2015-12-29 active