Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1ZRD callsign genealogy
Currently held by LEFEBVRE, CARL L
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 W1ZRD's current licensee, walking backwards.
- BORGSTROM, KEITH CNHgranted 2002-10-17cancelled 2002-11-05
Successor callsigns
Callsigns held now by people who previously held W1ZRD.
- LEFEBVRE, CARL LFLgranted 2018-03-27
All historical holders
Every license row we've seen with the callsign W1ZRD, oldest first.
- BORGSTROM, KEITH C NH2022-09-07 active
- LEFEBVRE, CARL L— → cancelled 1998-06-18