uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-12

K1FPP callsign genealogy

Currently held by MONAHAN, RICHARD T

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 K1FPP's current licensee, walking backwards.

  1. K1WFDcancelled· T
    Mahoney, Kelvin RMAgranted 2018-06-05cancelled 2020-08-11
  2. KB1QWFcancelled· T
    Mahoney, Kelvin RMAgranted 2008-06-25cancelled 2008-07-15

Successor callsigns

Callsigns held now by people who previously held K1FPP.

  1. K4FPPactive· E
    MONAHAN, RICHARD TSCgranted 2020-08-14

All historical holders

Every license row we've seen with the callsign K1FPP, oldest first.

  • MONAHAN, RICHARD T CT
    2008-10-23 → cancelled 2010-10-19
  • MAHONEY, KELVIN MA
    2020-08-11 active
← Back to K1FPP License history →