Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA0MGO callsign genealogy
Currently held by Block, John
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 KA0MGO's current licensee, walking backwards.
- Block, JohnCOgranted 2022-04-11cancelled 2022-06-14
Successor callsigns
Callsigns held now by people who previously held KA0MGO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA0MGO, oldest first.
- MC DOWELL SR, ELMER E MO1995-08-18 → cancelled 2005-08-25
- Block, John CO2022-06-14 active