Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7PJM callsign genealogy
Currently held by Madigan, Patrick 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 K7PJM's current licensee, walking backwards.
- Madigan, Patrick JORgranted 2018-02-26cancelled 2018-03-20
Successor callsigns
Callsigns held now by people who previously held K7PJM.
- Madigan, Patrick JMNgranted 2021-12-24