Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WW4RP callsign genealogy
Currently held by PUPO, RAUL
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 WW4RP's current licensee, walking backwards.
- GRUNDY, DANIEL MTNgranted 2022-02-28cancelled 2022-04-16
Successor callsigns
Callsigns held now by people who previously held WW4RP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WW4RP, oldest first.
- PUPO, RAUL FL2007-07-19 → cancelled 2019-10-16
- Grundy, Daniel M TN2022-04-16 active