Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KL7GRN callsign genealogy
Currently held by Donaldson, Joseph R
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 KL7GRN's current licensee, walking backwards.
- Donaldson, Joseph RAKgranted 2025-04-03cancelled 2025-05-28
Successor callsigns
Callsigns held now by people who previously held KL7GRN.
No current licensee on record previously held this callsign.