Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4FDP callsign genealogy
Currently held by Headley, Kenneth S
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 N4FDP's current licensee, walking backwards.
- Headley, Kenneth SFLgranted 2015-10-14cancelled 2018-10-19
Successor callsigns
Callsigns held now by people who previously held N4FDP.
- Headley, Kenneth SFLgranted 2015-10-14cancelled 2018-10-19
All historical holders
Every license row we've seen with the callsign N4FDP, oldest first.
- Headley, Kenneth S FL2006-01-10 → cancelled 2015-09-23
- Headley, Kenneth S FL2018-10-19 active