Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4UKJ callsign genealogy
Currently held by SIMMONS SR, ROBERT 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 W4UKJ's current licensee, walking backwards.
- Simmons III, Robert NMOgranted 2019-11-19cancelled 2019-12-07
Successor callsigns
Callsigns held now by people who previously held W4UKJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4UKJ, oldest first.
- SIMMONS SR, ROBERT N TN2006-05-17 → cancelled 2018-08-08
- Simmons III, Robert N MO2019-12-07 active