Confidence: Medium · Source: FCC ULS · As of 2026-09-16
KC1SKI callsign genealogy
Currently held by Jeffries, Philip 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 KC1SKI's current licensee, walking backwards.
- Jeffries, PhilipMAgranted 2013-05-30cancelled 2014-05-09
Successor callsigns
Callsigns held now by people who previously held KC1SKI.
No current licensee on record previously held this callsign.