Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0SIG callsign genealogy
Currently held by MARTEN, GREGORY A
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 K0SIG's current licensee, walking backwards.
- MARTEN, GREGORY AIAgranted 2002-07-16cancelled 2002-08-06
Successor callsigns
Callsigns held now by people who previously held K0SIG.
No current licensee on record previously held this callsign.