Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD7DAM callsign genealogy
Currently held by THARP, MARK J
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 KD7DAM'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 KD7DAM.
- WA7EOCactiveYAKIMA COUNTY RADIO AMATEURSWAgranted 2018-10-05