Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7LOO callsign genealogy
Currently held by MARCHLEWSKI, GREGORY 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 K7LOO's current licensee, walking backwards.
- MARCHLEWSKI, GREGORY JORgranted 2011-03-01cancelled 2020-02-08
Successor callsigns
Callsigns held now by people who previously held K7LOO.
No current licensee on record previously held this callsign.