Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WA7KUM callsign genealogy
Currently held by Radicke, Ingo
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 WA7KUM's current licensee, walking backwards.
- KF7DTAcancelledSAGUARO AMATEUR REMOTE BASE ASSOCIATIONAZgranted 2009-07-10cancelled 2009-12-22
Successor callsigns
Callsigns held now by people who previously held WA7KUM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA7KUM, oldest first.
- Radicke, Ingo AZ2007-09-07 → cancelled 2009-03-06
- SAGUARO AMATEUR REMOTE BASE ASSOCIATION AZ2019-12-10 active