Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K7ISO callsign genealogy
Currently held by QUALITY RADIO OPERATORS
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 K7ISO's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held K7ISO.
- K4FQPcancelledQUALITY RADIO OPERATORSFLgranted 2001-04-03cancelled 2003-08-09
All historical holders
Every license row we've seen with the callsign K7ISO, oldest first.
- QUALITY RADIO OPERATORS NV1999-02-03 → cancelled 2001-04-03
- BRUUN 384, RAYMOND NV2024-04-06 active