Confidence: Medium · Source: FCC ULS · As of 2026-09-14
N0GWP callsign genealogy
Currently held by SHAFFER, FRANK L
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 N0GWP's current licensee, walking backwards.
- Shaffer, FrankCOgranted 2023-04-28cancelled 2023-05-31
Successor callsigns
Callsigns held now by people who previously held N0GWP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N0GWP, oldest first.
- SHAFFER, FRANK L CO2006-04-20 → cancelled 2018-03-02
- Shaffer, Frank CO2023-05-31 active