Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD4CLP callsign genealogy
Currently held by Powder, Clayton 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 KD4CLP's current licensee, walking backwards.
- Powder, Clayton LALgranted 2026-01-23cancelled 2026-04-10
Successor callsigns
Callsigns held now by people who previously held KD4CLP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD4CLP, oldest first.
- ZEHNDER, PAUL M KY2011-05-18 → cancelled 2023-07-12
- Powder, Clayton L AL2026-04-10 active