Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N5DRM callsign genealogy
Currently held by COMBS, RICHARD E
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 N5DRM's current licensee, walking backwards.
- Marquardt, David RTXgranted 2019-03-13cancelled 2020-07-25
Successor callsigns
Callsigns held now by people who previously held N5DRM.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N5DRM, oldest first.
- COMBS, RICHARD E TX1996-03-18 → cancelled 2008-03-19
- Mobley, David R AR2008-06-27 → cancelled 2020-06-30
- Marquardt, David R TX2020-07-25 active