Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC1DR callsign genealogy
Currently held by JOHNSON, WILLIAM A
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 KC1DR's current licensee, walking backwards.
- JOHNSON, WILLIAM ANHgranted 2015-04-23cancelled 2017-03-14
Successor callsigns
Callsigns held now by people who previously held KC1DR.
- MENNONNA JR, JOSEPH ANYgranted 2019-03-19
All historical holders
Every license row we've seen with the callsign KC1DR, oldest first.
- MENNONNA JR, JOSEPH A NY2003-02-25 → cancelled 2009-05-01
- JOHNSON, WILLIAM A NH2017-03-14 active