Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4PSE callsign genealogy
Currently held by Butler, John 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 K4PSE's current licensee, walking backwards.
- Butler, John MINgranted 2005-03-08cancelled 2010-07-27
Successor callsigns
Callsigns held now by people who previously held K4PSE.
No current licensee on record previously held this callsign.