Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W1POP callsign genealogy
Currently held by SPRAGUE, ROBERT C
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 W1POP's current licensee, walking backwards.
- Liedke Jr, Fred JCTgranted 2002-12-12cancelled 2008-08-30
Successor callsigns
Callsigns held now by people who previously held W1POP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1POP, oldest first.
- SPRAGUE, ROBERT C RI1997-10-21 → cancelled 2004-07-02
- LIEDKE JR, FRED J CT2018-06-27 active