Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4KFC callsign genealogy
Currently held by CASTELLAW, CHRISTIAN 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 N4KFC's current licensee, walking backwards.
- Castellaw, Christian LTNgranted 2006-06-27cancelled 2007-07-07
Successor callsigns
Callsigns held now by people who previously held N4KFC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4KFC, oldest first.
- MC DONELL, RICHARD H GA1994-10-21 → cancelled 2006-10-24
- CASTELLAW, CHRISTIAN L TN2017-07-12 active