Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WA4WTF callsign genealogy
Currently held by Allendorfer, Peter 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 WA4WTF's current licensee, walking backwards.
- Allendorfer, Peter MALgranted 2017-07-14cancelled 2017-08-01
Successor callsigns
Callsigns held now by people who previously held WA4WTF.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign WA4WTF, oldest first.
- ROZZELLE, BOBBY L NC1996-02-28 → cancelled 2008-02-29
- Allendorfer, Peter M AL2017-08-01 active