Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KA9HLP callsign genealogy
Currently held by VILLWOCK, ROBERT 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 KA9HLP's current licensee, walking backwards.
- Cohen, GaryCAgranted 2010-10-12cancelled 2013-06-21
Successor callsigns
Callsigns held now by people who previously held KA9HLP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KA9HLP, oldest first.
- VILLWOCK, ROBERT M WI1988-04-19 → cancelled 2000-04-20
- COHEN, GARY A CA2023-04-14 active