Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA1ZR callsign genealogy
Currently held by Kaiser Jr, Roger A
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 KA1ZR's current licensee, walking backwards.
- Kaiser Jr, Roger APAgranted 2016-01-06cancelled 2016-01-26
Successor callsigns
Callsigns held now by people who previously held KA1ZR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA1ZR, oldest first.
- BANKS, DONALD S NH1996-12-13 → cancelled 2008-12-16
- Kaiser Jr, Roger A PA2025-12-02 active