Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4RLS callsign genealogy
Currently held by GUIN JR, J FOY
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 W4RLS's current licensee, walking backwards.
- Sillett, Robert LFLgranted 2013-01-03cancelled 2020-04-28
Successor callsigns
Callsigns held now by people who previously held W4RLS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4RLS, oldest first.
- GUIN JR, J FOY AL2008-02-28 → cancelled 2020-04-09
- Sillett, Robert L FL2020-04-28 active