Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC9RPM callsign genealogy
Currently held by Mangold, Robert P
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 KC9RPM's current licensee, walking backwards.
- Mangold, Robert PINgranted 2006-06-29cancelled 2006-12-12
Successor callsigns
Callsigns held now by people who previously held KC9RPM.
- Mangold, Robert PINgranted 2017-07-25