Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K6ZZO callsign genealogy
Currently held by ABEND, MARK 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 K6ZZO's current licensee, walking backwards.
- Abend 615, Mark ACAgranted 2013-01-23cancelled 2017-09-15
Successor callsigns
Callsigns held now by people who previously held K6ZZO.
- Abend, MarkAZgranted 2022-07-16