Confidence: Medium · Source: FCC ULS · As of 2026-09-12
WA5SUP callsign genealogy
Currently held by GREAVES, CARLOS M
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 WA5SUP's current licensee, walking backwards.
- Montgomery, Mark RTXgranted 2018-05-16cancelled 2018-06-19
Successor callsigns
Callsigns held now by people who previously held WA5SUP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA5SUP, oldest first.
- GREAVES, CARLOS M TX2006-01-10 → cancelled 2018-01-11
- Montgomery, Mark R TX2018-06-19 active