Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K7DCO callsign genealogy
Currently held by Johnson, Michael C
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 K7DCO's current licensee, walking backwards.
- Johnson, Michael CAZgranted 2004-04-27cancelled 2008-10-07
Successor callsigns
Callsigns held now by people who previously held K7DCO.
No current licensee on record previously held this callsign.