Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9NNI callsign genealogy
Currently held by Sproul, Daniel J
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 K9NNI's current licensee, walking backwards.
- Sproul, Daniel JILgranted 2010-03-24cancelled 2010-04-20
Successor callsigns
Callsigns held now by people who previously held K9NNI.
No current licensee on record previously held this callsign.