Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K8TMM callsign genealogy
Currently held by MANGES, BETTY 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 K8TMM's current licensee, walking backwards.
- Manley, Toby MOHgranted 2019-04-30cancelled 2019-07-02
Successor callsigns
Callsigns held now by people who previously held K8TMM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K8TMM, oldest first.
- MANGES, BETTY J OH2005-06-27 → cancelled 2017-09-23
- Manley, Toby M OH2019-07-02 active