Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM4UIF callsign genealogy
Currently held by Swanson Mr, Robert A
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 KM4UIF's current licensee, walking backwards.
- Swanson Mr, Robert AKYgranted 2010-03-23cancelled 2016-06-01
Successor callsigns
Callsigns held now by people who previously held KM4UIF.
- Swanson Mr, Robert ATXgranted 2022-01-11cancelled 2022-01-27