Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4PTP callsign genealogy
Currently held by SINATRA, SAM 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 N4PTP's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held N4PTP.
No current licensee on record previously held this callsign.