Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC1OT callsign genealogy
Currently held by McIntyre, Sean I
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 KC1OT's current licensee, walking backwards.
- McIntyre, Sean ICTgranted 2022-01-12cancelled 2023-02-07
Successor callsigns
Callsigns held now by people who previously held KC1OT.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC1OT, oldest first.
- THIRUMALAI, AJAI MA1998-07-08 → cancelled 2002-10-17
- McIntyre, Sean I CT2023-02-07 active