Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5CKP callsign genealogy
Currently held by Koch, Craig N
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 W5CKP's current licensee, walking backwards.
- Koch, Craig NTXgranted 2025-06-13cancelled 2025-07-01
Successor callsigns
Callsigns held now by people who previously held W5CKP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5CKP, oldest first.
- Slay, David W LA2004-09-17 → cancelled 2016-12-13
- Koch, Craig N TX2025-07-01 active