Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF0OL callsign genealogy
Currently held by SIEBRING, GARY C
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 KF0OL's current licensee, walking backwards.
- KA0DWEno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KF0OL.
No current licensee on record previously held this callsign.