Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3MMC callsign genealogy
Currently held by Niemeyer, Robert 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 W3MMC's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W3MMC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3MMC, oldest first.
- Niemeyer, Robert T VA2007-10-22 → cancelled 2011-05-26
- MINETTA, ROBERT FL2018-02-09 active