Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KN4HSM callsign genealogy
Currently held by KRIESE, 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 KN4HSM's current licensee, walking backwards.
- SHANK, MATTHEW RPAgranted 2021-07-22cancelled 2021-08-10
Successor callsigns
Callsigns held now by people who previously held KN4HSM.
- KRIESE, DAVID WFLgranted 2018-01-09
All historical holders
Every license row we've seen with the callsign KN4HSM, oldest first.
- KRIESE, DAVID W FL2017-11-17 → cancelled 2018-01-09
- SHANK, MATTHEW R PA2021-08-10 active