Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB8MMM callsign genealogy
Currently held by HARNISH, J MATT
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 KB8MMM's current licensee, walking backwards.
- HARNISH, J MATTMIgranted 2019-04-01cancelled 2019-07-19
Successor callsigns
Callsigns held now by people who previously held KB8MMM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB8MMM, oldest first.
- PANCAKE, LESLIE D OH1991-07-02 → cancelled 2003-07-03
- HARNISH, J MATT AZ2019-07-19 active