Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KC5IBH callsign genealogy
Currently held by MERCK JR, WILLIAM 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 KC5IBH's current licensee, walking backwards.
- MERCK JR, WILLIAM ATXgranted 2024-04-27
Successor callsigns
Callsigns held now by people who previously held KC5IBH.
- MERCK JR, WILLIAM ATXgranted 2024-04-27