Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1ZAC callsign genealogy
Currently held by POTTER, ROBERT E
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 K1ZAC's current licensee, walking backwards.
- Bern, ZacAZgranted 2020-01-31cancelled 2020-12-04
Successor callsigns
Callsigns held now by people who previously held K1ZAC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1ZAC, oldest first.
- POTTER, ROBERT E NH1997-11-04 → cancelled 2009-11-05
- Bern, Zac AZ2020-12-04 active