Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4SIR callsign genealogy
Currently held by MOORE, GEORGE C
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 W4SIR's current licensee, walking backwards.
- Eberly, Michael JSCgranted 2015-10-20cancelled 2015-11-10
Successor callsigns
Callsigns held now by people who previously held W4SIR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4SIR, oldest first.
- MOORE, GEORGE C SC1998-05-06 → cancelled 2010-05-07
- Eberly, Michael J SC2015-11-10 active