Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA1DH callsign genealogy
Currently held by Harrington, Douglas M
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 WA1DH's current licensee, walking backwards.
- Harrington, Douglas MMAgranted 2002-12-17cancelled 2006-04-21
Successor callsigns
Callsigns held now by people who previously held WA1DH.
- Harrington, Douglas MRIgranted 2018-02-17