Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD7OCO callsign genealogy
Currently held by Pemberton, Jay 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 KD7OCO's current licensee, walking backwards.
- Cossitt, Donald RORgranted 2020-11-30cancelled 2021-03-30
Successor callsigns
Callsigns held now by people who previously held KD7OCO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KD7OCO, oldest first.
- Pemberton, Jay C WA2001-08-14 → cancelled 2013-08-15
- Cossitt, Donald R OR2021-03-30 active