Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NN4US callsign genealogy
Currently held by HIWASSEE 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 NN4US's current licensee, walking backwards.
- KG4ICScancelledHIWASSEE CONTEST GROUPTNgranted 2000-06-13cancelled 2009-09-15
Successor callsigns
Callsigns held now by people who previously held NN4US.
- MC CLAMMA III, HAL SALgranted 2001-07-27cancelled 2004-07-24
All historical holders
Every license row we've seen with the callsign NN4US, oldest first.
- MC CLAMMA III, HAL S AL1998-08-24 → cancelled 2001-07-27
- HIWASSEE CONTEST GROUP TN2019-06-21 active