Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KN0TTS callsign genealogy
Currently held by Sparks, Samuel 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 KN0TTS's current licensee, walking backwards.
- Sparks, Samuel DCOgranted 2019-03-18cancelled 2019-04-06
Successor callsigns
Callsigns held now by people who previously held KN0TTS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KN0TTS, oldest first.
- KNOTTS, CHRIS R DE2006-09-19 → cancelled 2018-09-20
- Sparks, Samuel D CO2019-04-06 active