Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4PPA callsign genealogy
Currently held by DERGAN, KENNETH M
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 K4PPA's current licensee, walking backwards.
- Sierra, Jose RVAgranted 2015-11-16cancelled 2015-12-04
Successor callsigns
Callsigns held now by people who previously held K4PPA.
- Dergan, Kenneth MNCgranted 2007-07-06cancelled 2011-01-11
All historical holders
Every license row we've seen with the callsign K4PPA, oldest first.
- DERGAN, KENNETH M NC2002-11-02 → cancelled 2007-07-06
- Sierra, Jose R VA2015-12-04 active