Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K5JUM callsign genealogy
Currently held by MCPHAIL, JASON 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 K5JUM's current licensee, walking backwards.
- McPHAIL, JASON MMSgranted 2011-02-14cancelled 2011-04-29
Successor callsigns
Callsigns held now by people who previously held K5JUM.
- MCPHAIL, JASON MMSgranted 2023-06-09