Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9POF callsign genealogy
Currently held by NIEMANN, RONALD S
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 W9POF's current licensee, walking backwards.
- Niemann, Ronald SWIgranted 2009-04-23cancelled 2011-05-27
Successor callsigns
Callsigns held now by people who previously held W9POF.
No current licensee on record previously held this callsign.