Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD5RYO callsign genealogy
Currently held by HOBBS, CHRISTOPHER M
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 KD5RYO's current licensee, walking backwards.
- HOBBS, CHRISTOPHER MARgranted 2016-11-07cancelled 2016-11-26
Successor callsigns
Callsigns held now by people who previously held KD5RYO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD5RYO, oldest first.
- Hobbs, Christopher M AR2002-04-05 → cancelled 2014-04-08
- HOBBS, CHRISTOPHER M AR2016-11-26 active