Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K3EMF callsign genealogy
Currently held by Cheshire, Mark C
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 K3EMF's current licensee, walking backwards.
- Kasparek, Robert MPAgranted 2017-03-22cancelled 2024-10-22
Successor callsigns
Callsigns held now by people who previously held K3EMF.
- Cheshire, Mark CMDgranted 2019-03-15
All historical holders
Every license row we've seen with the callsign K3EMF, oldest first.
- Cheshire, Mark C MD2018-12-11 → cancelled 2019-03-15
- Kasparek, Robert M PA2024-10-22 active