Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W9SPT callsign genealogy
Currently held by Wisconsin Digital Radio Group
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 W9SPT's current licensee, walking backwards.
- KD9EOYcancelledWisconsin Digital Radio GroupWIgranted 2015-09-16cancelled 2016-03-11
Successor callsigns
Callsigns held now by people who previously held W9SPT.
No current licensee on record previously held this callsign.