Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N5YOK callsign genealogy
Currently held by Dittalumphu, Thanadech
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 N5YOK's current licensee, walking backwards.
- Dittalumphu, ThanadechTXgranted 2015-07-07cancelled 2019-11-22
Successor callsigns
Callsigns held now by people who previously held N5YOK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N5YOK, oldest first.
- WILSON, ORA L OK1992-01-21 → cancelled 2004-01-22
- Dittalumphu, Thanadech TX2019-11-22 active