Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1JLN callsign genealogy
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 K1JLN's current licensee, walking backwards.
- NIELSEN, JASON LUTgranted 2018-08-28
Successor callsigns
Callsigns held now by people who previously held K1JLN.
- NIELSEN, JASON LUTgranted 2018-08-28
All historical holders
Every license row we've seen with the callsign K1JLN, oldest first.
- Nielsen, Jason L UT2014-09-12 → cancelled 2018-08-28
- ——