Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1LER callsign genealogy
Currently held by Gray, Shad M
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 K1LER's current licensee, walking backwards.
- Sluth, Eric RCOgranted 2022-07-28cancelled 2022-09-20
Successor callsigns
Callsigns held now by people who previously held K1LER.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1LER, oldest first.
- Gray, Shad M NY2010-04-13 → cancelled 2022-04-14
- Sluth, Eric R CO2022-09-20 active