Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KZ0E callsign genealogy
Currently held by Roohr, Lawrence E
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 KZ0E's current licensee, walking backwards.
- Roohr, Lawrence ECOgranted 2005-04-16cancelled 2006-01-07
Successor callsigns
Callsigns held now by people who previously held KZ0E.
- Roohr, Lawrence ECOgranted 2005-04-16cancelled 2006-01-07
All historical holders
Every license row we've seen with the callsign KZ0E, oldest first.
- Roohr, Lawrence E CO2001-05-04 → cancelled 2005-04-16
- Roohr, Lawrence E CO2015-10-14 active