Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KU4F callsign genealogy
Currently held by COCKRAM JR, LES T
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 KU4F's current licensee, walking backwards.
- FLEMING, ROBERT JTNgranted 2016-04-13cancelled 2021-08-23
Successor callsigns
Callsigns held now by people who previously held KU4F.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KU4F, oldest first.
- COCKRAM JR, LES T FL2010-01-20 → cancelled 2019-08-03
- FLEMING, ROBERT J TN2021-08-23 active