Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KM4IBA callsign genealogy
Currently held by CROSS, MICHAEL C
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 KM4IBA's current licensee, walking backwards.
- CROSS, MICHAEL CFLgranted 2016-05-16cancelled 2022-04-05
Successor callsigns
Callsigns held now by people who previously held KM4IBA.
- Smith, Susan FVAgranted 2026-02-10
All historical holders
Every license row we've seen with the callsign KM4IBA, oldest first.
- Smith, Susan F VA2015-02-19 → cancelled 2015-03-13
- CROSS, MICHAEL C FL2022-04-05 active