Confidence: Medium · Source: FCC ULS · As of 2026-09-14
AI4MK callsign genealogy
Currently held by Plumblee, Christopher 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 AI4MK's current licensee, walking backwards.
- Plumblee, Christopher GFLgranted 1999-04-27cancelled 2005-09-30
Successor callsigns
Callsigns held now by people who previously held AI4MK.
- Plumblee, Christopher GFLgranted 2016-03-25cancelled 2018-11-24