Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1JHK callsign genealogy
Currently held by KUEFFNER, JOHN H
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 K1JHK's current licensee, walking backwards.
- Kingman, Jay HMAgranted 2016-11-02cancelled 2016-11-22
Successor callsigns
Callsigns held now by people who previously held K1JHK.
- KUEFFNER, JOHN HVTgranted 2022-06-03
All historical holders
Every license row we've seen with the callsign K1JHK, oldest first.
- KUEFFNER, JOHN H VT1998-01-07 → cancelled 2002-07-30
- Kingman, Jay H MA2016-11-22 active