Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KJ7MC callsign genealogy
Currently held by Calsyn, Martin R
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 KJ7MC's current licensee, walking backwards.
- Calsyn, Martin RWAgranted 2017-10-10cancelled 2017-12-23
Successor callsigns
Callsigns held now by people who previously held KJ7MC.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KJ7MC, oldest first.
- MARTIN, PATRICIA AZ1995-03-31 → cancelled 2003-12-04
- Calsyn, Martin R WA2017-12-23 active