Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9HAN callsign genealogy
Currently held by HANDZO, MARK 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 K9HAN's current licensee, walking backwards.
- HANDZO, MARK TKSgranted 2003-10-27cancelled 2006-03-18
Successor callsigns
Callsigns held now by people who previously held K9HAN.
- HANDZO, MARK TMOgranted 2026-02-25