Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD9PB callsign genealogy
Currently held by KOLLMEYER, JOHN H
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 KD9PB's current licensee, walking backwards.
- Berens, Paul JINgranted 2023-02-28cancelled 2023-06-22
Successor callsigns
Callsigns held now by people who previously held KD9PB.
- Berens, Paul JINgranted 2023-08-01
All historical holders
Every license row we've seen with the callsign KD9PB, oldest first.
- KOLLMEYER, JOHN H IL1989-03-28 → cancelled 2001-03-29
- Berens, Paul J IN2023-06-22 → cancelled 2023-08-01