Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WA4JPK callsign genealogy
Currently held by Gross, Samuel D
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 WA4JPK's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WA4JPK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA4JPK, oldest first.
- GROSS JR, SAM D AL2004-06-30 → cancelled 2009-02-26
- Gross, Samuel D SC2020-04-07 active