Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K5ABB callsign genealogy
Currently held by MARTS, WILLIAM G
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 K5ABB's current licensee, walking backwards.
- Marts, William GNMgranted 2017-07-18cancelled 2017-08-08
Successor callsigns
Callsigns held now by people who previously held K5ABB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K5ABB, oldest first.
- GANDY, CLYDE E LA2005-03-28 → cancelled 2017-06-22
- MARTS, WILLIAM G NM2017-08-08 active