Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KD9MCA callsign genealogy
Currently held by Greenfield, Eric S
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 KD9MCA's current licensee, walking backwards.
- Greenfield, Eric SWIgranted 2013-01-25cancelled 2018-11-28
Successor callsigns
Callsigns held now by people who previously held KD9MCA.
- Greenfield, Eric SWIgranted 2018-12-18