Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7XH callsign genealogy
Currently held by FISCHER, MICHAEL B
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 K7XH's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K7XH.
- FISCHER, MICHAEL BWAgranted 2017-12-02cancelled 2018-11-27
All historical holders
Every license row we've seen with the callsign K7XH, oldest first.
- FISCHER, MICHAEL B WA2009-07-11 → cancelled 2017-12-02
- FISCHER, MICHAEL B WA2018-11-27 active