Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9SKM callsign genealogy
Currently held by EHRHARDT, ROBERT L
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 K9SKM's current licensee, walking backwards.
- EHRHARDT, ROBERT LAZgranted 2010-11-01cancelled 2012-12-22
Successor callsigns
Callsigns held now by people who previously held K9SKM.
No current licensee on record previously held this callsign.