Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1FK callsign genealogy
Currently held by BOWKER, DAVID W
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 K1FK's current licensee, walking backwards.
- Klock, Frank AMAgranted 2020-01-30cancelled 2020-12-29
Successor callsigns
Callsigns held now by people who previously held K1FK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1FK, oldest first.
- BOWKER, DAVID W ME2016-09-21 → cancelled 2018-12-08
- Klock, Frank A MA2020-12-29 active