Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9SPL callsign genealogy
Currently held by Craig, Jon 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 W9SPL's current licensee, walking backwards.
- Craig, Jon MINgranted 2010-06-10cancelled 2010-08-10
Successor callsigns
Callsigns held now by people who previously held W9SPL.
No current licensee on record previously held this callsign.