Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD4DX callsign genealogy
Currently held by RAMOS, JOSE 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 KD4DX's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KD4DX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD4DX, oldest first.
- Sherer, Hollis L AL2006-01-05 → cancelled 2018-03-29
- RAMOS, JOSE A FL2018-07-10 active