Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N8OTA callsign genealogy
Currently held by Isaacson, Mark 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 N8OTA's current licensee, walking backwards.
- Isaacson, Mark RMIgranted 2022-04-13cancelled 2026-06-09
Successor callsigns
Callsigns held now by people who previously held N8OTA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N8OTA, oldest first.
- ISAACSON, MARK R MI2001-03-21 → cancelled 2013-06-05
- Isaacson, Mark R MI2026-06-09 active