Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD7RM callsign genealogy
Currently held by Kowtun, Walter
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 AD7RM's current licensee, walking backwards.
- Kowtun, WalterAZgranted 2004-02-04cancelled 2007-12-27
Successor callsigns
Callsigns held now by people who previously held AD7RM.
No current licensee on record previously held this callsign.