Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5DTP callsign genealogy
Currently held by DUNSMORE, JOHN J
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 W5DTP's current licensee, walking backwards.
- Parra, Christopher JTXgranted 2019-01-31cancelled 2019-02-20
Successor callsigns
Callsigns held now by people who previously held W5DTP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5DTP, oldest first.
- DUNSMORE, JOHN J TX2004-05-03 → cancelled 2016-07-29
- Parra, Christopher J TX2019-02-20 active