Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC7SDN callsign genealogy
Currently held by Frank Jr, Richard L
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 KC7SDN's current licensee, walking backwards.
- Frank Jr, Richard LIDgranted 2017-05-17cancelled 2017-06-23
Successor callsigns
Callsigns held now by people who previously held KC7SDN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KC7SDN, oldest first.
- FRANK, RICHARD L ID1996-07-31 → cancelled 2008-08-01
- Frank Jr, Richard L ID2017-06-23 active