Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W4AFP callsign genealogy
Currently held by Lineberger, James 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 W4AFP's current licensee, walking backwards.
- SHARP, MARTIN AFLgranted 2020-11-05cancelled 2020-12-04
Successor callsigns
Callsigns held now by people who previously held W4AFP.
- Lineberger, James MGAgranted 2004-07-13cancelled 2004-09-28
All historical holders
Every license row we've seen with the callsign W4AFP, oldest first.
- Lineberger, James M GA2000-09-01 → cancelled 2004-07-13
- SHARP, MARTIN A FL2020-12-04 active