Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6SIR callsign genealogy
Currently held by Higgins, Tim
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 K6SIR's current licensee, walking backwards.
- Higgins, TimCAgranted 2020-12-01cancelled 2020-12-19
Successor callsigns
Callsigns held now by people who previously held K6SIR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6SIR, oldest first.
- RAMONA RADIO CLUB CA1997-05-29 → cancelled 2009-05-30
- Higgins, Tim CA2020-12-19 active