Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC9ZOL callsign genealogy
Currently held by Zoller, Jeffrey R
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 KC9ZOL's current licensee, walking backwards.
- Zoller, Jeffrey RINgranted 2012-02-17cancelled 2012-03-20
Successor callsigns
Callsigns held now by people who previously held KC9ZOL.
No current licensee on record previously held this callsign.