Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5PM callsign genealogy
Currently held by WALKER, RICKEY N
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 K5PM's current licensee, walking backwards.
- Castillo, Arthur RTXgranted 2012-11-05cancelled 2017-01-10
Successor callsigns
Callsigns held now by people who previously held K5PM.
- WALKER, RICKEY NALgranted 2022-09-02
All historical holders
Every license row we've seen with the callsign K5PM, oldest first.
- WALKER, RICKEY N AL1998-06-24 → cancelled 2002-11-30
- MARTINI, PAT AZ2004-12-21 → cancelled 2016-12-22
- Castillo, Arthur R TX2017-01-10 active