Confidence: Medium · Source: FCC ULS · As of 2026-09-14
K9FHP callsign genealogy
Currently held by Groth, Barbara M
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 K9FHP's current licensee, walking backwards.
- Groth, Barbara MFLgranted 2016-12-14cancelled 2017-01-04
Successor callsigns
Callsigns held now by people who previously held K9FHP.
- Borkowski, Matt JFLgranted 2013-10-17cancelled 2021-10-05
All historical holders
Every license row we've seen with the callsign K9FHP, oldest first.
- Borkowski, Matt J FL2011-02-02 → cancelled 2013-10-17
- Groth, Barbara M FL2017-01-04 active