Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WI7MM callsign genealogy
Currently held by SHRYNE, MICHAEL L
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 WI7MM's current licensee, walking backwards.
- SHRYNE, MICHAEL LIDgranted 2009-10-20cancelled 2011-11-04
Successor callsigns
Callsigns held now by people who previously held WI7MM.
No current licensee on record previously held this callsign.