Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4TET callsign genealogy
Currently held by GRAMMER, GREGORY
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 K4TET's current licensee, walking backwards.
- GRAMMER, GREGORYSCgranted 2014-05-23cancelled 2014-06-10
Successor callsigns
Callsigns held now by people who previously held K4TET.
- FITE, CHRISTOPHER BSCgranted 2014-05-28cancelled 2026-07-14
All historical holders
Every license row we've seen with the callsign K4TET, oldest first.
- FITE, CHRISTOPHER B SC2004-01-13 → cancelled 2004-07-13
- GRAMMER, GREGORY SC2024-12-24 active