Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KQ4PS callsign genealogy
Currently held by Schrader, Peter 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 KQ4PS's current licensee, walking backwards.
- Schrader, Peter DORgranted 2019-06-27cancelled 2019-07-16
Successor callsigns
Callsigns held now by people who previously held KQ4PS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KQ4PS, oldest first.
- JONES, MARTHA S TN2002-12-10 → cancelled 2015-03-10
- Schrader, Peter D OR2019-07-16 active