Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KM4OO callsign genealogy
Currently held by SHERGOLD, STEVE D
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 KM4OO's current licensee, walking backwards.
- Moore, Ronald STNgranted 2020-03-05cancelled 2020-03-24
Successor callsigns
Callsigns held now by people who previously held KM4OO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KM4OO, oldest first.
- SHERGOLD, STEVE D VA1990-07-31 → cancelled 2002-08-01
- Moore, Ronald S MI2020-03-24 active