Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD4SVN callsign genealogy
Currently held by KING, MARK R
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 KD4SVN's current licensee, walking backwards.
- King, Mark RVAgranted 2025-08-22cancelled 2025-09-26
Successor callsigns
Callsigns held now by people who previously held KD4SVN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD4SVN, oldest first.
- KING, MARK R VA2012-08-16 → cancelled 2024-09-17
- King, Mark R VA2025-09-26 active