Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4NTM callsign genealogy
Currently held by RUBIN, ROBERT M
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 W4NTM's current licensee, walking backwards.
- Santiago, JavierFLgranted 2019-11-04cancelled 2019-11-23
Successor callsigns
Callsigns held now by people who previously held W4NTM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4NTM, oldest first.
- RUBIN, ROBERT M FL1996-08-09 → cancelled 2008-08-12
- Santiago, Javier FL2019-11-23 active