Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WD4PTC callsign genealogy
Currently held by DAHLSTROM, DENNIS F
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 WD4PTC's current licensee, walking backwards.
- Dahlstrom, Dennis FFLgranted 2013-09-25cancelled 2013-11-06
Successor callsigns
Callsigns held now by people who previously held WD4PTC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WD4PTC, oldest first.
- DAHLSTROM, DENNIS F FL1997-07-29 → cancelled 2009-07-30
- Dahlstrom, Dennis F FL2013-11-06 → cancelled 2026-03-07