Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4ZAM callsign genealogy
Currently held by MCKNIGHT, RANDALL W
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 W4ZAM's current licensee, walking backwards.
- MCKNIGHT, RANDALL WKYgranted 2024-09-18cancelled 2024-10-11
Successor callsigns
Callsigns held now by people who previously held W4ZAM.
No current licensee on record previously held this callsign.