Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KM4IDQ callsign genealogy
Currently held by Crumpton, Keith T
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 KM4IDQ's current licensee, walking backwards.
The current licensee has not held any other callsign on record.
Successor callsigns
Callsigns held now by people who previously held KM4IDQ.
- Crumpton, Keith TFLgranted 2022-04-15