Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4SEP callsign genealogy
Currently held by Oteri, Mallory R
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 K4SEP's current licensee, walking backwards.
- Oteri, Mallory RFLgranted 2016-03-09cancelled 2020-09-04
Successor callsigns
Callsigns held now by people who previously held K4SEP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K4SEP, oldest first.
- STOWE, MARION W FL2008-11-18 → cancelled 2016-05-26
- Oteri, Mallory R FL2020-09-04 active