Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC1RPK callsign genealogy
Currently held by Sypek, Alan J
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 KC1RPK's current licensee, walking backwards.
- Sypek, Alan JNHgranted 2016-12-29cancelled 2017-01-18
Successor callsigns
Callsigns held now by people who previously held KC1RPK.
- Sypek, Alan JNHgranted 2017-05-16