Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4BFX callsign genealogy
Currently held by FRENZEL, BRYAN
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 W4BFX's current licensee, walking backwards.
- FRENZEL, BRYANTXgranted 2020-09-10cancelled 2020-09-29
Successor callsigns
Callsigns held now by people who previously held W4BFX.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4BFX, oldest first.
- HARRIS, ERNEST AL2004-08-13 → cancelled 2016-08-23
- FRENZEL, BRYAN MD2020-09-29 active