Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4JHC callsign genealogy
Currently held by CHALMERS III, JAMES H
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 W4JHC's current licensee, walking backwards.
- CHALMERS III, JAMES HGAgranted 2017-09-15cancelled 2017-10-06
Successor callsigns
Callsigns held now by people who previously held W4JHC.
- Cunniff, John HLAgranted 2025-05-15
All historical holders
Every license row we've seen with the callsign W4JHC, oldest first.
- Cunniff, John H LA2006-07-25 → cancelled 2015-07-17
- CHALMERS III, JAMES H GA2017-10-06 active