Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AB3XM callsign genealogy
Currently held by Diener, Richard P
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 AB3XM's current licensee, walking backwards.
- Diener, Richard PMDgranted 2014-10-30cancelled 2015-05-20
Successor callsigns
Callsigns held now by people who previously held AB3XM.
No current licensee on record previously held this callsign.