Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KB7CDN callsign genealogy
Currently held by Richman, David B
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 KB7CDN's current licensee, walking backwards.
- Richman, David BWAgranted 2016-07-13cancelled 2016-08-02
Successor callsigns
Callsigns held now by people who previously held KB7CDN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KB7CDN, oldest first.
- RICHMAN, DAVID B WA2000-11-09 → cancelled 2013-02-06
- Richman, David B WA2026-05-19 active