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

KJ5UF callsign genealogy

Currently held by READ, ALVIN 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 KJ5UF's current licensee, walking backwards.

  1. WB5RRactive· A
    OSTROFSKY, CHARLESTXgranted 2026-08-29
  2. KB9GQcancelled· A
    OSTROFSKY, CHARLESMDgranted 2016-07-06cancelled 2026-08-29

Successor callsigns

Callsigns held now by people who previously held KJ5UF.

  1. WB5RRcancelled· A
    READ, ALVIN RTXgranted 2016-06-28cancelled 2019-03-19

All historical holders

Every license row we've seen with the callsign KJ5UF, oldest first.

  • READ, ALVIN R TX
    2013-10-17 → cancelled 2016-06-28
  • READ, ALVIN R TX
    2019-03-19 active
← Back to KJ5UF License history →