Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7GMR callsign genealogy
Currently held by Godshalk, Gordon
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 K7GMR's current licensee, walking backwards.
- Godshalk, GordonORgranted 2020-09-08cancelled 2022-04-12
Successor callsigns
Callsigns held now by people who previously held K7GMR.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7GMR, oldest first.
- RENTFROW, MICHAEL J PA2004-09-08 → cancelled 2016-10-15
- Godshalk, Gordon OR2022-04-12 active