Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KX4KK callsign genealogy
Currently held by McMahon, Patrick L
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 KX4KK's current licensee, walking backwards.
- McMahon, Patrick LTNgranted 2018-05-05cancelled 2019-11-22
Successor callsigns
Callsigns held now by people who previously held KX4KK.
- McMahon, Patrick LTNgranted 2018-05-05cancelled 2019-11-22