Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W7JJP callsign genealogy
Currently held by Pio, John J
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 W7JJP's current licensee, walking backwards.
- Pio, John JAZgranted 2018-08-28cancelled 2018-09-18
Successor callsigns
Callsigns held now by people who previously held W7JJP.
- Pio, John JAZgranted 2018-09-18
All historical holders
Every license row we've seen with the callsign W7JJP, oldest first.
- ERICKSON, RUDOLPH A WA1988-08-23 → cancelled 2000-08-24
- Pio, John J AZ2018-09-18 → cancelled 2020-05-04