Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WA7OHK callsign genealogy
Currently held by Niemi, William R
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 WA7OHK's current licensee, walking backwards.
- Niemi, William RWAgranted 2009-11-18cancelled 2009-12-08
Successor callsigns
Callsigns held now by people who previously held WA7OHK.
- Niemi, William RWAgranted 2022-01-07