Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KI4JNR callsign genealogy
Currently held by Knapp, Donald D
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 KI4JNR's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KI4JNR.
- Knapp, Donald DNCgranted 2015-06-16