Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7EF callsign genealogy
Currently held by PALMER SR, GEORGE A
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 K7EF's current licensee, walking backwards.
- ZESIGER, TYLERUTgranted 2007-06-19cancelled 2009-03-13
Successor callsigns
Callsigns held now by people who previously held K7EF.
- Ruby Jr, Glenn RussellORgranted 2016-11-26
All historical holders
Every license row we've seen with the callsign K7EF, oldest first.
- PALMER SR, GEORGE A WA1995-08-16 → cancelled 2001-03-07
- Ruby Jr, Glenn Russell OR2004-08-03 → cancelled 2007-02-21
- ZESIGER, TYLER CA2019-02-08 active