Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9HDS callsign genealogy
Currently held by SPARLING, HAROLD 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 K9HDS's current licensee, walking backwards.
- SPARLING, HAROLD DINgranted 1997-10-30cancelled 2000-10-17
Successor callsigns
Callsigns held now by people who previously held K9HDS.
No current licensee on record previously held this callsign.