Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AJ5CM callsign genealogy
Currently held by Johnson, Robert 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 AJ5CM's current licensee, walking backwards.
- Johnson, Robert KARgranted 2019-08-15cancelled 2026-08-10
Successor callsigns
Callsigns held now by people who previously held AJ5CM.
- Johnson, Robert KARgranted 2026-09-01