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Confidence: Medium · Source: FCC ULS · As of 2026-09-14

K5OIF callsign genealogy

Currently held by Sass, Ryan R

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 K5OIF's current licensee, walking backwards.

  1. W9CNWcancelled· T
    Sass, Ryan RTXgranted 2012-02-14cancelled 2020-03-03
  2. KC9VGKcancelled· T
    Sass, Ryan RILgranted 2012-01-26cancelled 2012-02-14

Successor callsigns

Callsigns held now by people who previously held K5OIF.

No current licensee on record previously held this callsign.

← Back to K5OIF License history →