Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4MRG callsign genealogy
Currently held by Gillham, Michael 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 W4MRG's current licensee, walking backwards.
- Gillham, Michael RGAgranted 2017-11-13cancelled 2017-12-01
Successor callsigns
Callsigns held now by people who previously held W4MRG.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4MRG, oldest first.
- Gload, Richard A FL2005-03-04 → cancelled 2017-03-07
- Gillham, Michael R FL2017-12-01 active