Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4RMG callsign genealogy
Currently held by Griswold, Robert M
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 K4RMG's current licensee, walking backwards.
- Griswold, Robert MNCgranted 2017-10-27cancelled 2018-03-24
Successor callsigns
Callsigns held now by people who previously held K4RMG.
No current licensee on record previously held this callsign.