Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AC0LB callsign genealogy
Currently held by Merkling, John R
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 AC0LB's current licensee, walking backwards.
- Merkling, John RCOgranted 2007-02-26cancelled 2008-04-25
Successor callsigns
Callsigns held now by people who previously held AC0LB.
- Merkling, John RCOgranted 2018-02-21