Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KF5YZW callsign genealogy
Currently held by Siebert, 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 KF5YZW's current licensee, walking backwards.
- Siebert, David AOKgranted 2013-09-12cancelled 2013-11-07
Successor callsigns
Callsigns held now by people who previously held KF5YZW.
No current licensee on record previously held this callsign.