Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7FLK callsign genealogy
Currently held by Knapp, Frederick 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 W7FLK's current licensee, walking backwards.
- Knapp, Frederick LWAgranted 2015-10-13cancelled 2025-07-22
Successor callsigns
Callsigns held now by people who previously held W7FLK.
No current licensee on record previously held this callsign.