Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5IMF callsign genealogy
Currently held by SODOLAK, MICHAEL S
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 W5IMF's current licensee, walking backwards.
- SODOLAK, MICHAEL STXgranted 2014-02-18cancelled 2015-08-07
Successor callsigns
Callsigns held now by people who previously held W5IMF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5IMF, oldest first.
- SPANN, MICHAEL M TX2007-07-17 → cancelled 2014-10-21
- SODOLAK, MICHAEL S TX2025-07-24 active