Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KF0OS callsign genealogy
Currently held by ZORN, WALTER L
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 KF0OS's current licensee, walking backwards.
- KA0YRMno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held KF0OS.
- ZORN, WALTER LCOgranted 2002-04-10cancelled 2010-10-23