Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4SZP callsign genealogy
Currently held by COWAN, TAYLOR O
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 W4SZP's current licensee, walking backwards.
- Rutherford Sr, Michael JTNgranted 2011-02-18cancelled 2014-05-13
Successor callsigns
Callsigns held now by people who previously held W4SZP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4SZP, oldest first.
- COWAN, TAYLOR O TN1993-10-26 → cancelled 2005-10-27
- Rutherford SR, Michael TN2024-04-06 active