Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3DTP callsign genealogy
Currently held by DASH, JOHN B
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 W3DTP's current licensee, walking backwards.
- Peterson Jr, Delwyn TPAgranted 2016-03-16cancelled 2016-05-21
Successor callsigns
Callsigns held now by people who previously held W3DTP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3DTP, oldest first.
- DASH, JOHN B MD1997-07-18 → cancelled 2009-07-21
- Peterson Jr, Delwyn T PA2016-05-21 active