Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1FSP callsign genealogy
Currently held by Speck FSP, Frank M
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 K1FSP's current licensee, walking backwards.
- Speck, Frank MCAgranted 2023-02-11cancelled 2023-03-13
Successor callsigns
Callsigns held now by people who previously held K1FSP.
No current licensee on record previously held this callsign.