Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9OW callsign genealogy
Currently held by NIEHAUS, NICHOLAS T
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 W9OW's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W9OW.
- MEAD, JOHN SAZgranted 2021-09-14
All historical holders
Every license row we've seen with the callsign W9OW, oldest first.
- MEAD, JOHN S AZ2016-08-09 → cancelled 2021-09-14
- NIEHAUS, NICHOLAS T WI2023-10-03 active