Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KG4RYP callsign genealogy
Currently held by Slocum, David A
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 KG4RYP's current licensee, walking backwards.
- Plotner, Gerald EOHgranted 2024-12-17cancelled 2025-03-28
Successor callsigns
Callsigns held now by people who previously held KG4RYP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KG4RYP, oldest first.
- Slocum, David A AL2002-03-07 → cancelled 2014-03-08
- Plotner, Gerald E OH2025-03-28 active