Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NO3K callsign genealogy
Currently held by HAVEL, DAVID
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 NO3K's current licensee, walking backwards.
- McKnight, Richard MGAgranted 2009-08-14cancelled 2013-03-12
Successor callsigns
Callsigns held now by people who previously held NO3K.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign NO3K, oldest first.
- HAVEL, DAVID PA1999-02-11 → cancelled 2011-02-12
- McKnight, Richard M GA2023-02-10 active