Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3PRB callsign genealogy
Currently held by Santos, Juan J
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 W3PRB's current licensee, walking backwards.
- Santos, Juan JMIgranted 2022-03-03cancelled 2022-03-22
Successor callsigns
Callsigns held now by people who previously held W3PRB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3PRB, oldest first.
- Townsend Jr, John W MD2004-01-06 → cancelled 2016-03-23
- Santos, Juan J MI2022-03-22 active