Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6MJB callsign genealogy
Currently held by POAT, JOHN J
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 K6MJB's current licensee, walking backwards.
- Bogdanowicz, Mitchell JCAgranted 2025-03-25cancelled 2025-04-12
Successor callsigns
Callsigns held now by people who previously held K6MJB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6MJB, oldest first.
- POAT, JOHN J CA2011-04-15 → cancelled 2023-07-12
- Bogdanowicz, Mitchell J CA2025-04-12 active