Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3MAT callsign genealogy
Currently held by HARDING, HOWARD R
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 W3MAT's current licensee, walking backwards.
- McConnell, Matthew DPAgranted 2017-10-13cancelled 2017-12-15
Successor callsigns
Callsigns held now by people who previously held W3MAT.
- Troup, Marlin "Loon" APAgranted 2015-11-21cancelled 2016-08-02
All historical holders
Every license row we've seen with the callsign W3MAT, oldest first.
- HARDING, HOWARD R FL1996-06-18 → cancelled 2008-06-19
- Troup, Marlin "Loon" A PA2009-06-06 → cancelled 2015-11-21
- McConnell, Matthew D PA2017-12-15 active