Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KH7XX callsign genealogy
Currently held by HAWAII DX SOCIETY
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 KH7XX's current licensee, walking backwards.
- SCHWAB, MICHAEL SHIgranted 2009-05-16cancelled 2013-01-23
Successor callsigns
Callsigns held now by people who previously held KH7XX.
- KH7CWactiveCoconut Wireless Contest ClubHIgranted 2020-03-18
All historical holders
Every license row we've seen with the callsign KH7XX, oldest first.
- HAWAII DX SOCIETY HI1998-07-09 → cancelled 2008-11-05
- Coconut Wireless Contest Club HI2009-12-04 → cancelled 2010-06-11
- SCHWAB, MICHAEL S HI2022-12-20 active