Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N7DMA callsign genealogy
Currently held by RIFENBARK, KARL E
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 N7DMA's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held N7DMA.
No current licensee on record previously held this callsign.