Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W9JMS callsign genealogy
Currently held by GROUNDS, HOWARD T
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 W9JMS's current licensee, walking backwards.
- Singer, James MOHgranted 2018-09-27cancelled 2019-06-08
Successor callsigns
Callsigns held now by people who previously held W9JMS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W9JMS, oldest first.
- GROUNDS, HOWARD T IN2007-02-20 → cancelled 2019-05-21
- Singer, James M TN2019-06-08 active