Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1HDL callsign genealogy
Currently held by Labbe, Harold 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 W1HDL's current licensee, walking backwards.
- Labbe, Harold DARgranted 2018-08-16cancelled 2019-05-21
Successor callsigns
Callsigns held now by people who previously held W1HDL.
No current licensee on record previously held this callsign.