Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WI9M callsign genealogy
Currently held by Trester, Neil T
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 WI9M's current licensee, walking backwards.
- Trester, Neil TWIgranted 2005-07-18cancelled 2014-03-14
Successor callsigns
Callsigns held now by people who previously held WI9M.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WI9M, oldest first.
- SHARBUNO, GARY J WI2009-03-12 → cancelled 2013-10-20
- Trester, Neil T WI2024-01-25 active