Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3MMM callsign genealogy
Currently held by Ryabinin, Yuriy
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 W3MMM's current licensee, walking backwards.
- HORMAN JR, JAMES WMDgranted 2008-04-14cancelled 2016-10-29
Successor callsigns
Callsigns held now by people who previously held W3MMM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3MMM, oldest first.
- Ryabinin, Yuriy NY2004-04-30 → cancelled 2016-05-03
- HORMAN JR, JAMES W MD2016-10-29 active