Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9FRO callsign genealogy
Currently held by Erdman, Jeffrey 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 K9FRO's current licensee, walking backwards.
- Erdman, Jeffrey DINgranted 2009-09-08cancelled 2011-06-07
Successor callsigns
Callsigns held now by people who previously held K9FRO.
No current licensee on record previously held this callsign.