Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4SHM callsign genealogy
Currently held by Monk II, Samuel H
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 K4SHM's current licensee, walking backwards.
- Monk II, Samuel HALgranted 2014-07-17cancelled 2014-08-09
Successor callsigns
Callsigns held now by people who previously held K4SHM.
No current licensee on record previously held this callsign.