uls-tracker
Sign in
Confidence: Medium · Source: FCC ULS · As of 2026-09-14

K5KR callsign genealogy

Currently held by WONDERGEM, JOHN M

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 K5KR's current licensee, walking backwards.

  1. AE5ZQcancelled· E
    SERRAGO, DANIEL FTXgranted 2011-08-25cancelled 2021-05-07

Successor callsigns

Callsigns held now by people who previously held K5KR.

  1. W5ORVactive· E
    DEES, DAVID CAZgranted 2019-04-16

All historical holders

Every license row we've seen with the callsign K5KR, oldest first.

  • WONDERGEM, JOHN M LA
    2006-08-17 → cancelled 2015-08-31
  • DEES, DAVID C AZ
    2017-09-19 → cancelled 2019-04-16
  • SERRAGO, DANIEL F TX
    2021-05-07 active
← Back to K5KR License history →