Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KA5OHM callsign genealogy
Currently held by Hartmann, Oliver J
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 KA5OHM's current licensee, walking backwards.
- Hartmann, Oliver JNCgranted 2023-04-18cancelled 2023-05-06
Successor callsigns
Callsigns held now by people who previously held KA5OHM.
- Hartmann, Oliver JNCgranted 2024-07-26
All historical holders
Every license row we've seen with the callsign KA5OHM, oldest first.
- MOSS, WANITA A TX1998-03-11 → cancelled 2010-03-12
- Hartmann, Oliver J NC2023-05-06 → cancelled 2024-07-26