Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9XOK callsign genealogy
Currently held by MCDERMOTT, PATRICK
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 K9XOK's current licensee, walking backwards.
- MCDERMOTT, PATRICK DILgranted 2006-07-21cancelled 2007-10-05
Successor callsigns
Callsigns held now by people who previously held K9XOK.
No current licensee on record previously held this callsign.