Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K7HRH callsign genealogy
Currently held by SIEBOL SR, ROBERT
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 K7HRH's current licensee, walking backwards.
- Blecha, Judy LAZgranted 2013-05-14cancelled 2014-02-01
Successor callsigns
Callsigns held now by people who previously held K7HRH.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7HRH, oldest first.
- SIEBOL SR, ROBERT WA1998-12-09 → cancelled 2010-12-10
- Blecha, Judy L AZ2024-01-17 active