Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K0OTR callsign genealogy
Currently held by Williams, Jeffrey 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 K0OTR's current licensee, walking backwards.
- Williams, Jeffrey DMNgranted 2011-10-20cancelled 2014-08-08
Successor callsigns
Callsigns held now by people who previously held K0OTR.
- Williams, Jeffrey DMNgranted 2023-04-11