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

K1BSB callsign genealogy

Currently held by MACK, RALPH A

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 K1BSB's current licensee, walking backwards.

  1. WA1ZCH
    no FCC ULS record on file

Successor callsigns

Callsigns held now by people who previously held K1BSB.

No current licensee on record previously held this callsign.

← Back to K1BSB License history →