Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4FKR callsign genealogy
Currently held by Amsler, Robert
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 W4FKR's current licensee, walking backwards.
- Amsler, RobertFLgranted 2020-12-15cancelled 2021-01-05
Successor callsigns
Callsigns held now by people who previously held W4FKR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4FKR, oldest first.
- GRAHAM, LAMAR T FL2008-02-05 → cancelled 2020-04-28
- Amsler, Robert FL2021-01-05 active