Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KD3SB callsign genealogy
Currently held by Holsopple, Harry E
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 KD3SB's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KD3SB.
- Holsopple, Harry EPAgranted 2013-08-30cancelled 2019-11-19
All historical holders
Every license row we've seen with the callsign KD3SB, oldest first.
- Holsopple, Harry E PA2010-01-28 → cancelled 2013-08-30
- Holsopple, Harry E PA2021-01-15 active