Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K7RPW callsign genealogy
Currently held by MASON, DUANE D
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 K7RPW's current licensee, walking backwards.
- Wichelns, Ryan PWAgranted 2017-12-20cancelled 2018-01-23
Successor callsigns
Callsigns held now by people who previously held K7RPW.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K7RPW, oldest first.
- MASON, DUANE D OR1996-12-10 → cancelled 2008-12-11
- Wichelns, Ryan P CO2018-01-23 active