Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4KOP callsign genealogy
Currently held by BALDWIN JR, RUFUS G
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 W4KOP's current licensee, walking backwards.
- PARKER, BRUCE LTNgranted 2017-09-22cancelled 2019-04-19
Successor callsigns
Callsigns held now by people who previously held W4KOP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4KOP, oldest first.
- BALDWIN JR, RUFUS G VA1996-11-04 → cancelled 2008-11-05
- PARKER, BRUCE L TN2019-04-19 active