Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD0IYU callsign genealogy
Currently held by Kimball, Mark 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 KD0IYU's current licensee, walking backwards.
- Kimball, Mark WCOgranted 2009-07-20cancelled 2009-09-22
Successor callsigns
Callsigns held now by people who previously held KD0IYU.
- Kimball, Mark WCOgranted 2019-08-13