Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF5SP callsign genealogy
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 KF5SP's current licensee, walking backwards.
- Pitzl, Steven MOKgranted 2019-02-19cancelled 2019-03-09
Successor callsigns
Callsigns held now by people who previously held KF5SP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KF5SP, oldest first.
- Pitzl, Steven M OK2019-03-09 active
- —— → cancelled 1997-12-17