Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM4UOW callsign genealogy
Currently held by GUILLEN SOULARY, ERICH
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 KM4UOW's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KM4UOW.
- GUILLEN SOULARY, ERICHTXgranted 2026-09-11