Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4VER callsign genealogy
Currently held by KIRCHOFF, THOMAS D
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 K4VER's current licensee, walking backwards.
- DeRoo, John EGAgranted 2019-07-01cancelled 2019-07-30
Successor callsigns
Callsigns held now by people who previously held K4VER.
- KIRCHOFF, THOMAS DTNgranted 2004-03-16cancelled 2016-03-17
All historical holders
Every license row we've seen with the callsign K4VER, oldest first.
- KIRCHOFF, THOMAS D TN1997-06-11 → cancelled 2004-03-16
- DeRoo, John E GA2019-07-30 active