Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC3AIQ callsign genealogy
Currently held by Kramer, John 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 KC3AIQ's current licensee, walking backwards.
- Johnson, Jonathan DMDgranted 2017-01-19cancelled 2022-09-24
Successor callsigns
Callsigns held now by people who previously held KC3AIQ.
- Kramer, John DPAgranted 2014-07-08cancelled 2015-06-30
All historical holders
Every license row we've seen with the callsign KC3AIQ, oldest first.
- Kramer, John D PA2013-04-03 → cancelled 2014-07-08
- Johnson, Jonathan D MD2022-09-24 active