Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NK4AA callsign genealogy
Currently held by USCG Contest Group
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 NK4AA's current licensee, walking backwards.
- KENNEDY, JEFFREY RFLgranted 2013-02-21cancelled 2018-01-30
Successor callsigns
Callsigns held now by people who previously held NK4AA.
- NN4TOcancelledUSCG Contest GroupGUgranted 2008-10-28cancelled 2010-04-02
All historical holders
Every license row we've seen with the callsign NK4AA, oldest first.
- USCG Contest Group FL2004-05-21 → cancelled 2008-10-28
- KENNEDY, JEFFREY R FL2018-01-30 active