Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N1ZSP callsign genealogy
Currently held by SHAW, JOHN D
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 N1ZSP's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held N1ZSP.
- SHAW, JOHN DNHgranted 2014-01-28cancelled 2026-03-06