Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4AMK callsign genealogy
Currently held by BOLLETTINO, JEFFREY O
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 K4AMK's current licensee, walking backwards.
- BOLLETTINO, JEFFREY OVAgranted 2016-11-10cancelled 2016-12-02
Successor callsigns
Callsigns held now by people who previously held K4AMK.
- Kyser, Austin MMOgranted 2021-02-04
All historical holders
Every license row we've seen with the callsign K4AMK, oldest first.
- Kyser, Austin M AL2010-07-20 → cancelled 2011-02-23
- BOLLETTINO, JEFFREY O VA2016-12-02 active