Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K1LDO callsign genealogy
Currently held by Diederich, Christopher D
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 K1LDO's current licensee, walking backwards.
- Diederich, Christopher DNCgranted 2015-09-22cancelled 2016-09-09
Successor callsigns
Callsigns held now by people who previously held K1LDO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K1LDO, oldest first.
- RIMMER, DAVID M CT1995-02-07 → cancelled 2007-02-08
- Diederich, Christopher D NC2026-06-23 active