Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7MBB callsign genealogy
Currently held by Cossman, Robert C
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 W7MBB's current licensee, walking backwards.
- ODea, PatrickAZgranted 2026-03-10cancelled 2026-03-28
Successor callsigns
Callsigns held now by people who previously held W7MBB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7MBB, oldest first.
- Cossman, Robert C AZ2007-08-14 → cancelled 2019-11-13
- ODea, Patrick AZ2026-03-28 active