Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1PDH callsign genealogy
Currently held by HASENFUSS, PETER 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 W1PDH's current licensee, walking backwards.
- HASENFUSS, PETER DMAgranted 2010-06-07cancelled 2011-04-22
Successor callsigns
Callsigns held now by people who previously held W1PDH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1PDH, oldest first.
- GUTOWSKI, EUGENE M MA1996-02-16 → cancelled 2008-02-19
- HASENFUSS, PETER D MA2021-02-12 active