Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N9PI callsign genealogy
Currently held by HOLLE, DANIEL F
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 N9PI's current licensee, walking backwards.
- Pataska, Ronald LWIgranted 1992-11-24cancelled 2002-03-29
Successor callsigns
Callsigns held now by people who previously held N9PI.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N9PI, oldest first.
- HOLLE, DANIEL F CA1989-06-27 → cancelled 2001-06-28
- Pataska, Ronald L WI2022-03-15 active