Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9SPN callsign genealogy
Currently held by MARCH, WILLARD B
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 W9SPN's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held W9SPN.
No current licensee on record previously held this callsign.