Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4DFW callsign genealogy
Currently held by SHORT, ROBERT 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 W4DFW's current licensee, walking backwards.
- Short, Robert MKYgranted 2013-12-31cancelled 2016-06-21
Successor callsigns
Callsigns held now by people who previously held W4DFW.
- Patton Jr, Robert WFLgranted 2019-07-19
All historical holders
Every license row we've seen with the callsign W4DFW, oldest first.
- ALEXANDER, CHESTER J AL1988-09-20 → cancelled 2000-09-22
- Patton Jr, Robert W FL2000-10-11 → cancelled 2009-09-22
- SHORT, ROBERT M TX2016-06-21 active