Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA5K callsign genealogy
Currently held by LONG, JOHN P
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 KA5K's current licensee, walking backwards.
- Callison, Ryan ATXgranted 2011-09-15cancelled 2020-06-23
Successor callsigns
Callsigns held now by people who previously held KA5K.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA5K, oldest first.
- LONG, JOHN P KS2008-11-01 → cancelled 2018-06-04
- Callison, Ryan A TX2020-06-23 active