Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W5DMC callsign genealogy
Currently held by HAMMACK, HERMAN L
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 W5DMC's current licensee, walking backwards.
- McFaul, DonivanCOgranted 2018-06-05cancelled 2018-07-06
Successor callsigns
Callsigns held now by people who previously held W5DMC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W5DMC, oldest first.
- HAMMACK, HERMAN L TX2006-01-11 → cancelled 2018-01-12
- MCFAUL, DONIVAN CO2018-07-06 active