Confidence: Medium · Source: FCC ULS · As of 2026-09-14
NO3HK callsign genealogy
Currently held by KARN, HAROLD 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 NO3HK's current licensee, walking backwards.
- KARN, HAROLD JTXgranted 2019-08-13
Successor callsigns
Callsigns held now by people who previously held NO3HK.
- KARN, HAROLD JTXgranted 2019-08-13