Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO5HER callsign genealogy
Currently held by Adams, John L
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 KO5HER's current licensee, walking backwards.
- Adams, John LORgranted 2022-06-16cancelled 2022-09-20
Successor callsigns
Callsigns held now by people who previously held KO5HER.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KO5HER, oldest first.
- Detkin, Jacob A CA2010-08-17 → cancelled 2022-08-18
- Adams, John L OR2022-09-20 active