Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W4ZIN callsign genealogy
Currently held by Heacock, Martin 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 W4ZIN's current licensee, walking backwards.
- Heacock, Martin TVAgranted 2009-03-06cancelled 2016-03-05
Successor callsigns
Callsigns held now by people who previously held W4ZIN.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W4ZIN, oldest first.
- ANDERSON JR, RAYMOND E VA1988-08-02 → cancelled 2000-08-03
- Heacock, Martin T VA2016-03-05 active