Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD9COP callsign genealogy
Currently held by Polichany, Philip 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 KD9COP's current licensee, walking backwards.
- DETMER, KURT SILgranted 2022-03-02cancelled 2022-03-22
Successor callsigns
Callsigns held now by people who previously held KD9COP.
- Polichany, Philip AOHgranted 2014-12-02
All historical holders
Every license row we've seen with the callsign KD9COP, oldest first.
- Polichany, Philip A OH2010-01-26 → cancelled 2014-12-02
- DETMER, KURT S IL2022-03-22 active