Confidence: Medium · Source: FCC ULS · As of 2026-09-11
K7MKB callsign genealogy
Currently held by BISCHOFF, MARK E
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 K7MKB's current licensee, walking backwards.
- BISCHOFF, MARK EORgranted 2020-11-04cancelled 2023-04-18
Successor callsigns
Callsigns held now by people who previously held K7MKB.
No current licensee on record previously held this callsign.