Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC2BYU callsign genealogy
Currently held by MANHA, JOHN R
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 KC2BYU's current licensee, walking backwards.
- BUTLER, MARY ALICETXgranted 2013-04-26cancelled 2021-03-27
Successor callsigns
Callsigns held now by people who previously held KC2BYU.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC2BYU, oldest first.
- MANHA, JOHN R NJ1997-06-11 → cancelled 2009-06-12
- BUTLER, MARY ALICE TX2021-03-27 active