Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4BTW callsign genealogy
Currently held by CASS, PHILIP 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 W4BTW's current licensee, walking backwards.
- MARLEY JR, JOEL WNCgranted 2019-04-17cancelled 2019-06-21
Successor callsigns
Callsigns held now by people who previously held W4BTW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4BTW, oldest first.
- CASS, PHILIP R FL2006-02-14 → cancelled 2018-04-03
- MARLEY JR, JOEL W NC2019-06-21 active