Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3CID callsign genealogy
Currently held by STEWART, JOHN O
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 W3CID's current licensee, walking backwards.
- Cid, Victor HMDgranted 2008-01-22cancelled 2009-08-08
Successor callsigns
Callsigns held now by people who previously held W3CID.
- STEWART, JOHN OCOgranted 2020-01-10
All historical holders
Every license row we've seen with the callsign W3CID, oldest first.
- STEWART, JOHN O CO1997-09-17 → cancelled 2000-03-14
- Cid, Victor H MD2019-07-02 active