Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1JGK callsign genealogy
Currently held by Kaiser III, Joseph G
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 K1JGK's current licensee, walking backwards.
- Kaiser III, Joseph GRIgranted 2024-11-15cancelled 2024-12-10
Successor callsigns
Callsigns held now by people who previously held K1JGK.
- Kellogg, Jeffrey GMAgranted 2020-01-07
All historical holders
Every license row we've seen with the callsign K1JGK, oldest first.
- Kellogg, Jeffrey G MA2009-09-29 → cancelled 2010-03-19
- Kaiser III, Joseph G FL2024-12-10 active