Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC0PI callsign genealogy
Currently held by Ingersoll, Philip 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 AC0PI's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held AC0PI.
- Lippke, David LSDgranted 2019-05-10
All historical holders
Every license row we've seen with the callsign AC0PI, oldest first.
- Lippke, David L SD2009-06-16 → cancelled 2009-07-07
- Ingersoll, Philip F CO2014-03-15 → cancelled 2026-03-17