Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N7CKM callsign genealogy
Currently held by McDonald, Calvin 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 N7CKM's current licensee, walking backwards.
- McDonald, Calvin KIDgranted 2015-01-08cancelled 2016-01-01
Successor callsigns
Callsigns held now by people who previously held N7CKM.
- McDonald, Calvin KIDgranted 2017-03-14