Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WW0F callsign genealogy
Currently held by HARIG, NATHAN 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 WW0F's current licensee, walking backwards.
- HARIG, NATHAN APAgranted 2022-08-19cancelled 2023-09-01
Successor callsigns
Callsigns held now by people who previously held WW0F.
- FROST, F WILLIAMCOgranted 2019-04-29
All historical holders
Every license row we've seen with the callsign WW0F, oldest first.
- Ratzlaff, Daniel D KS2012-04-25 → cancelled 2023-07-27
- HARIG, NATHAN A PA2023-09-01 active
- FROST JR, F WILLIAM— → cancelled 1999-06-24