Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W7JKC callsign genealogy
Currently held by Calnan, John K
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 W7JKC's current licensee, walking backwards.
- Calnan, John KWAgranted 2012-07-09cancelled 2013-05-24
Successor callsigns
Callsigns held now by people who previously held W7JKC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7JKC, oldest first.
- WIDDOWS, ALPHEUS D WA1995-01-05 → cancelled 2007-01-06
- Calnan, John K WA2023-02-24 active