Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD5YYF callsign genealogy
Currently held by Crail, Clayton B
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 KD5YYF's current licensee, walking backwards.
- Crail, Clayton BTXgranted 2023-10-25cancelled 2025-05-13
Successor callsigns
Callsigns held now by people who previously held KD5YYF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD5YYF, oldest first.
- Crail, Clayton B TX2003-08-20 → cancelled 2015-08-21
- Crail, Clayton B TX2025-05-13 active