Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4JKO callsign genealogy
Currently held by Crabtree, Morgan L
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 N4JKO's current licensee, walking backwards.
- Crabtree, Morgan LKYgranted 2013-07-17cancelled 2020-10-20
Successor callsigns
Callsigns held now by people who previously held N4JKO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4JKO, oldest first.
- FLOYD, WILBER R FL1988-08-30 → cancelled 2000-09-01
- Crabtree, Morgan L KY2020-10-20 active