Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KM4BOJ callsign genealogy
Currently held by TIDWELL, DONALD M
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 KM4BOJ's current licensee, walking backwards.
- TIDWELL, DONALD MTNgranted 2004-07-21cancelled 2014-05-21
Successor callsigns
Callsigns held now by people who previously held KM4BOJ.
- TIDWELL, DONALD MTNgranted 2014-08-12cancelled 2026-08-15