Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W7JMH callsign genealogy
Currently held by HEIDT, JACOB 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 W7JMH's current licensee, walking backwards.
- HEIDT, JACOB MIDgranted 2014-09-23cancelled 2016-03-05
Successor callsigns
Callsigns held now by people who previously held W7JMH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7JMH, oldest first.
- ALLEN JR, LEMUEL H ID1993-12-14 → cancelled 2005-12-15
- HEIDT, JACOB M ID2016-03-05 active