Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD8JTW callsign genealogy
Currently held by SIEBENSCHUH, RONALD W
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 KD8JTW'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 KD8JTW.
- SIEBENSCHUH, RONALD WMIgranted 2009-01-10cancelled 2010-07-27