Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WA9FM callsign genealogy
Currently held by Christensen, John
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 WA9FM's current licensee, walking backwards.
- Christensen, JohnVAgranted 2014-04-08cancelled 2014-07-15
Successor callsigns
Callsigns held now by people who previously held WA9FM.
- Thostenson, Gary CWIgranted 2007-05-01cancelled 2007-05-22
All historical holders
Every license row we've seen with the callsign WA9FM, oldest first.
- Thostenson, Gary C WI1997-12-17 → cancelled 2007-05-01
- Christensen, John MI2014-07-15 → cancelled 2026-07-16