Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W3SP callsign genealogy
Currently held by MEYER, CARL C
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 W3SP's current licensee, walking backwards.
- MUPPARAJU, KRISHNA MKYgranted 2007-07-05cancelled 2008-03-14
Successor callsigns
Callsigns held now by people who previously held W3SP.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W3SP, oldest first.
- MEYER, CARL C MD1997-03-24 → cancelled 2000-08-01
- MUPPARAJU, KRIS GA2018-01-24 active