Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD9DHM callsign genealogy
Currently held by Czechorski, Heather
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 WD9DHM's current licensee, walking backwards.
- Czechorski, HeatherWIgranted 2020-10-06cancelled 2020-10-31
Successor callsigns
Callsigns held now by people who previously held WD9DHM.
- ANDERSON, JOHN CWIgranted 2022-01-05