Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5CI callsign genealogy
Currently held by Slepoy, Leonid
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 K5CI's current licensee, walking backwards.
- Slepoy, LeonidTXgranted 2009-12-14cancelled 2010-03-09
Successor callsigns
Callsigns held now by people who previously held K5CI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5CI, oldest first.
- MAHONEY, THOMAS L TX2005-09-29 → cancelled 2006-12-07
- Slepoy, Leonid TX2020-04-11 active