Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NJ1SP callsign genealogy
Currently held by KAFKA, JOHN T
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 NJ1SP's current licensee, walking backwards.
- KAFKA, JOHN TNJgranted 2012-05-03cancelled 2017-06-20
Successor callsigns
Callsigns held now by people who previously held NJ1SP.
No current licensee on record previously held this callsign.