Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4GSP callsign genealogy
Currently held by BOYLE, RALPH T
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 K4GSP's current licensee, walking backwards.
- BOYLE, RALPH TGAgranted 2004-03-20cancelled 2012-12-04
- KE4KXWno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held K4GSP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4GSP, oldest first.
- HUPP, ARTHUR C VA1997-10-31 → cancelled 2009-11-03
- BOYLE, RALPH T GA2022-11-22 active