Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KS1LAS callsign genealogy
Currently held by Macduff, John T
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 KS1LAS's current licensee, walking backwards.
- Macduff, John TWAgranted 2020-06-12cancelled 2020-07-03
Successor callsigns
Callsigns held now by people who previously held KS1LAS.
No current licensee on record previously held this callsign.