Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N4QCA callsign genealogy
Currently held by FEDERMAN, JOHN J
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 N4QCA's current licensee, walking backwards.
- KM4IYIcancelledQUAD CITIES AMATEUR RADIO ASSOCIATIONALgranted 2015-03-19cancelled 2017-01-27
Successor callsigns
Callsigns held now by people who previously held N4QCA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4QCA, oldest first.
- FEDERMAN, JOHN J GA1997-11-28 → cancelled 2009-12-01
- QUAD CITIES AMATEUR RADIO ASSOCIATION AL2017-01-27 active