Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AJ4MB callsign genealogy
Currently held by Blaes, Mark D
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 AJ4MB's current licensee, walking backwards.
- Blaes, Mark DVAgranted 2014-09-22cancelled 2014-10-10
Successor callsigns
Callsigns held now by people who previously held AJ4MB.
- Jackson, NorboryALgranted 2009-07-03cancelled 2021-07-07
All historical holders
Every license row we've seen with the callsign AJ4MB, oldest first.
- JACKSON, NORBORY E AL2008-10-24 → cancelled 2009-07-03
- Blaes, Mark D VA2024-08-20 active