Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KC3ZWO callsign genealogy
Currently held by Adams, Martin B
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 KC3ZWO's current licensee, walking backwards.
- Adams, MartinPAgranted 2019-10-30cancelled 2024-10-10
Successor callsigns
Callsigns held now by people who previously held KC3ZWO.
No current licensee on record previously held this callsign.