Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4CII callsign genealogy
Currently held by Sykes, David J
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 K4CII's current licensee, walking backwards.
- SYKES, THOMAS NTNgranted 2025-01-22cancelled 2025-03-01
Successor callsigns
Callsigns held now by people who previously held K4CII.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4CII, oldest first.
- Sykes, David J TN1996-07-30 → cancelled 2008-07-31
- SYKES, THOMAS N TN2025-03-01 active