Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KA7RJN callsign genealogy
Currently held by Mohler, John M
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 KA7RJN's current licensee, walking backwards.
- Mohler, John MMOgranted 2017-11-30cancelled 2018-01-03
Successor callsigns
Callsigns held now by people who previously held KA7RJN.
- Mohler, John MMOgranted 2020-06-16
All historical holders
Every license row we've seen with the callsign KA7RJN, oldest first.
- OAKLEY, BARBARA A MI1990-02-13 → cancelled 2002-03-07
- Mohler, John M MO2018-01-03 → cancelled 2020-06-16