Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1STP callsign genealogy
Currently held by Crowley, Daniel A
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 W1STP's current licensee, walking backwards.
- Crowley, Daniel ACTgranted 2013-04-09cancelled 2013-11-13
Successor callsigns
Callsigns held now by people who previously held W1STP.
- Crowley, Daniel ACTgranted 2023-11-02