Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4NGO callsign genealogy
Currently held by MANTHEY, JOHN F
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 W4NGO's current licensee, walking backwards.
- ENDSLEY, JAYNCgranted 2021-02-25cancelled 2021-03-19
Successor callsigns
Callsigns held now by people who previously held W4NGO.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4NGO, oldest first.
- MANTHEY, JOHN F TN2006-08-10 → cancelled 2018-11-06
- ENDSLEY, JAY NC2021-03-19 active