Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KG4IZP callsign genealogy
Currently held by Kreyling, Stephen R
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 KG4IZP's current licensee, walking backwards.
- Kreyling, Stephen RKYgranted 2004-06-04cancelled 2014-03-08
Successor callsigns
Callsigns held now by people who previously held KG4IZP.
- Kreyling, Stephen RKYgranted 2004-06-04cancelled 2014-03-08
All historical holders
Every license row we've seen with the callsign KG4IZP, oldest first.
- Kreyling, Stephen R KY2000-08-11 → cancelled 2004-06-04
- Kreyling, Stephen R KY2024-01-17 active