Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4IDA callsign genealogy
Currently held by Harper, Allen K
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 N4IDA's current licensee, walking backwards.
- Harper, Allen KOKgranted 2002-01-10cancelled 2002-03-26
Successor callsigns
Callsigns held now by people who previously held N4IDA.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4IDA, oldest first.
- HARPER, ALLEN K OK1995-02-08 → cancelled 2000-11-09
- Harper, Allen K OK2022-02-08 active