Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0KLN callsign genealogy
Currently held by Heimerl, Donald A
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 K0KLN's current licensee, walking backwards.
- Neal, Kerry LCOgranted 2021-03-02cancelled 2021-03-23
Successor callsigns
Callsigns held now by people who previously held K0KLN.
- Heimerl, Donald AMNgranted 2007-04-07cancelled 2019-04-09
All historical holders
Every license row we've seen with the callsign K0KLN, oldest first.
- Heimerl, Donald A MN1998-07-15 → cancelled 2007-04-07
- Neal, Kerry L CO2021-03-23 active