Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4DEQ callsign genealogy
Currently held by SCHALLER, DAVID C
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 K4DEQ's current licensee, walking backwards.
- Clark, Thomas RTNgranted 2020-04-28cancelled 2021-03-30
Successor callsigns
Callsigns held now by people who previously held K4DEQ.
- SCHALLER, DAVID CWAgranted 2016-09-16cancelled 2019-07-30
All historical holders
Every license row we've seen with the callsign K4DEQ, oldest first.
- SCHALLER, DAVID C WA2015-09-18 → cancelled 2016-09-16
- Clark, Thomas R TN2021-03-30 active