Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K4GPG callsign genealogy
Currently held by SWEITZER, DON
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 K4GPG's current licensee, walking backwards.
- SWEITZER, DONFLgranted 2004-02-17cancelled 2004-03-10
Successor callsigns
Callsigns held now by people who previously held K4GPG.
- LEWIS, JULIUSFLgranted 2002-09-24cancelled 2014-12-23