Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA5MAX callsign genealogy
Currently held by DUFF, ROBERT N
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 KA5MAX's current licensee, walking backwards.
- Bennett Jr, Max ETXgranted 2014-06-11cancelled 2016-07-23
Successor callsigns
Callsigns held now by people who previously held KA5MAX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA5MAX, oldest first.
- DUFF, ROBERT N TX1997-06-23 → cancelled 2008-08-01
- Bennett Jr, Max E NM2026-06-09 active