Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4SLB callsign genealogy
Currently held by Boggs, Sawyer 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 K4SLB's current licensee, walking backwards.
- Boggs, Sawyer LCTgranted 2017-06-20cancelled 2017-08-01
Successor callsigns
Callsigns held now by people who previously held K4SLB.
- Butler, Stephen LFLgranted 2022-03-11
All historical holders
Every license row we've seen with the callsign K4SLB, oldest first.
- Butler, Stephen L FL2004-06-08 → cancelled 2012-06-08
- Boggs, Sawyer L TN2017-08-01 active