Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4CWO callsign genealogy
Currently held by BUCK, DANNY R
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 W4CWO's current licensee, walking backwards.
- Buck, Danny RNCgranted 2016-01-19cancelled 2019-10-11
Successor callsigns
Callsigns held now by people who previously held W4CWO.
- ACKERMANN, FREDERICK CCOgranted 2017-05-31cancelled 2020-06-20
All historical holders
Every license row we've seen with the callsign W4CWO, oldest first.
- ACKERMANN, FREDERICK C CO2008-07-22 → cancelled 2017-05-31
- BUCK, DANNY R NC2019-10-11 active