Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KO3M callsign genealogy
Currently held by KEISER, ANNE 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 KO3M's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KO3M.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KO3M, oldest first.
- KEISER, ANNE M PA2009-08-07 → cancelled 2021-10-08
- BEAMAN, DANNY L WA2021-10-26 active