Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1ZZM callsign genealogy
Currently held by Harrison, Mike S
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 K1ZZM's current licensee, walking backwards.
- Harrison, Michael SAZgranted 2013-03-05cancelled 2013-07-09
Successor callsigns
Callsigns held now by people who previously held K1ZZM.
No current licensee on record previously held this callsign.