Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WO0Q callsign genealogy
Currently held by Rosenzweig, Martin
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 WO0Q's current licensee, walking backwards.
- MANWARING, KIM HAZgranted 2007-01-30cancelled 2014-06-06
Successor callsigns
Callsigns held now by people who previously held WO0Q.
- Rosenzweig, MartinCOgranted 2021-04-02
All historical holders
Every license row we've seen with the callsign WO0Q, oldest first.
- Rosenzweig, Martin CO2008-07-26 → cancelled 2011-06-28
- MANWARING, KIM H AZ2024-04-11 active