Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4SLN callsign genealogy
Currently held by Ponder Mr, Thomas W
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 N4SLN'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 N4SLN.
- PONDER, THOMAS WLAgranted 2018-03-29cancelled 2022-04-23