Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6SM callsign genealogy
Currently held by MOORE, JOHN P
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 W6SM's current licensee, walking backwards.
- MOORE, JOHN PCAgranted 1991-06-18cancelled 2000-09-26
- KM6AOno FCC ULS record on file
Successor callsigns
Callsigns held now by people who previously held W6SM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6SM, oldest first.
- LINDQUIST, RUDOLPH H CA1998-05-11 → cancelled 1998-09-05
- MOORE, JOHN P CA2021-09-23 active