Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3UPC callsign genealogy
Currently held by Tiedemann Jr, Robert W
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 W3UPC's current licensee, walking backwards.
- Tiedemann Jr, Robert WCOgranted 2015-07-22cancelled 2015-08-11
Successor callsigns
Callsigns held now by people who previously held W3UPC.
- Tiedemann Jr, Robert WGAgranted 2019-10-18