Confidence: Medium · Source: FCC ULS · As of 2026-09-09
K7MDR callsign genealogy
Currently held by Rickenbach, Mark 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 K7MDR's current licensee, walking backwards.
- Rickenbach, Mark DWAgranted 2012-09-26cancelled 2012-10-16
Successor callsigns
Callsigns held now by people who previously held K7MDR.
No current licensee on record previously held this callsign.