Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AD6DL callsign genealogy
Currently held by KOCZWARA, DANIEL J
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 AD6DL's current licensee, walking backwards.
- KOCZWARA, DANIEL JCAgranted 2014-08-23cancelled 2014-12-02
Successor callsigns
Callsigns held now by people who previously held AD6DL.
- KOCZWARA, DANIEL JCAgranted 2014-08-23cancelled 2014-12-02
All historical holders
Every license row we've seen with the callsign AD6DL, oldest first.
- KOCZWARA, DANIEL J CA2013-11-27 → cancelled 2014-08-23
- KOCZWARA, DANIEL J CA2024-09-07 active