Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6IGP callsign genealogy
Currently held by RICHTENBURG, DONALD C
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 K6IGP's current licensee, walking backwards.
- RICHTENBURG, DONALD CCAgranted 2009-11-14cancelled 2013-11-20
Successor callsigns
Callsigns held now by people who previously held K6IGP.
- RICHTENBURG, DONALD CCAgranted 2009-11-14cancelled 2013-11-20
All historical holders
Every license row we've seen with the callsign K6IGP, oldest first.
- RICHTENBURG, DONALD C CA2008-04-25 → cancelled 2009-11-14
- RICHTENBURG, DONALD C CA2025-07-30 active