Confidence: Medium · Source: FCC ULS · As of 2026-09-12
AH6D callsign genealogy
Currently held by Klein, Harrison J
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 AH6D's current licensee, walking backwards.
- KLEIN, HARRISON JHIgranted 1994-11-21cancelled 2000-10-24
Successor callsigns
Callsigns held now by people who previously held AH6D.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign AH6D, oldest first.
- BLANKMANN, PAUL W HI1988-03-08 → cancelled 2000-03-09
- Klein, Harrison J WA2020-07-28 active