Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KM3P callsign genealogy
Currently held by MARCU, HOWARD 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 KM3P's current licensee, walking backwards.
- Benson, Mark PPAgranted 2009-02-09cancelled 2010-05-07
Successor callsigns
Callsigns held now by people who previously held KM3P.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign KM3P, oldest first.
- MARCU, HOWARD S PA1997-03-03 → cancelled 2009-03-04
- Benson, Mark P PA2020-04-11 active