Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM4HTM callsign genealogy
Currently held by MARBY, RICHARD B
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 KM4HTM's current licensee, walking backwards.
- MARBY, RICHARD BSCgranted 2010-11-03cancelled 2015-02-10
Successor callsigns
Callsigns held now by people who previously held KM4HTM.
No current licensee on record previously held this callsign.