Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7PMM callsign genealogy
Currently held by CHRISTENSEN, RANDALL 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 K7PMM's current licensee, walking backwards.
- Johnston, Michael JIDgranted 2015-06-12cancelled 2015-06-30
Successor callsigns
Callsigns held now by people who previously held K7PMM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7PMM, oldest first.
- CHRISTENSEN, RANDALL J UT1996-04-23 → cancelled 2008-04-24
- Johnston, Michael J ID2025-07-05 active