Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K1MKU callsign genealogy
Currently held by SCHIFFMAN, MICHAEL 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 K1MKU's current licensee, walking backwards.
- SCHIFFMAN, MICHAEL ACTgranted 2020-09-21cancelled 2020-10-09
Successor callsigns
Callsigns held now by people who previously held K1MKU.
No current licensee on record previously held this callsign.