Confidence: Medium · Source: FCC ULS · As of 2026-09-12
NL7J callsign genealogy
Currently held by HEATER, DALE M
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 NL7J's current licensee, walking backwards.
- Baker, Michael AAKgranted 2007-02-27cancelled 2011-07-06
Successor callsigns
Callsigns held now by people who previously held NL7J.
- BUCHHOLZ, LESAKgranted 2026-08-07
All historical holders
Every license row we've seen with the callsign NL7J, oldest first.
- HEATER, DALE M AK1999-05-13 → cancelled 2011-05-14
- Baker, Michael A AK2021-04-12 active