Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4MDN callsign genealogy
Currently held by Nichols, Michael D
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 K4MDN's current licensee, walking backwards.
- Nichols, Michael DVAgranted 2012-01-26cancelled 2012-02-14
Successor callsigns
Callsigns held now by people who previously held K4MDN.
No current licensee on record previously held this callsign.