Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N7MMD callsign genealogy
Currently held by Crandall, John Z
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 N7MMD's current licensee, walking backwards.
- Crandall, John ZAZgranted 2024-06-04cancelled 2026-07-24
Successor callsigns
Callsigns held now by people who previously held N7MMD.
No current licensee on record previously held this callsign.