Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K8SO callsign genealogy
Currently held by LING, KEEFER R
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 K8SO's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K8SO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K8SO, oldest first.
- LING, KEEFER R OH1988-04-19 → cancelled 2000-04-20
- Rittenhouse, Brentford J MI2020-05-05 active