Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K4SYF callsign genealogy
Currently held by SACHS, ANDREW 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 K4SYF's current licensee, walking backwards.
- SACHS, ANDREW BNCgranted 2020-03-02cancelled 2020-03-20
Successor callsigns
Callsigns held now by people who previously held K4SYF.
No current licensee on record previously held this callsign.