Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N5GJM callsign genealogy
Currently held by BIBERDORF, DARYL 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 N5GJM's current licensee, walking backwards.
- Biberdorf, Daryl LTNgranted 2024-12-10cancelled 2024-12-28
Successor callsigns
Callsigns held now by people who previously held N5GJM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N5GJM, oldest first.
- BIBERDORF, DARYL L PA2011-06-04 → cancelled 2023-07-12
- Biberdorf, Daryl L TN2024-12-28 active