Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N6MMT callsign genealogy
Currently held by Clark, Robert W
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 N6MMT's current licensee, walking backwards.
- Clark, Robert WMIgranted 2024-01-17cancelled 2024-06-04
Successor callsigns
Callsigns held now by people who previously held N6MMT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N6MMT, oldest first.
- CLAESSENS, ARTHUR J CA2005-04-28 → cancelled 2017-05-09
- Clark, Robert W MI2024-06-04 active