Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KJ7WOO callsign genealogy
Currently held by Sperl, Patrick D
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 KJ7WOO's current licensee, walking backwards.
- Sperl, Patrick DWAgranted 2019-10-18cancelled 2019-11-13
Successor callsigns
Callsigns held now by people who previously held KJ7WOO.
No current licensee on record previously held this callsign.