Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K0BIO callsign genealogy
Currently held by Lien, Christopher Z
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 K0BIO's current licensee, walking backwards.
- Lien, Christopher ZMDgranted 2021-03-01cancelled 2024-06-11
Successor callsigns
Callsigns held now by people who previously held K0BIO.
No current licensee on record previously held this callsign.