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

KP4OD

Expired

RIVERA, CARLOS

Location
MAYAGUEZ, PR
Class
Advanced
Granted
1997-10-20
Expires
2007-10-20
Sign in to watch

Get notified about status changes and vanity availability for this callsign.

Vanity availability

584d

Available on 2028-04-16

KP4OD cancelled on 2026-04-17. Hold ends in 584 days.

Last held by Walker-Guzman, Delmer O (PR).

Confidence: High

Cancelled licenses begin the 2-year hold immediately on the cancellation date, so this is the firm release date per §97.19.

Callsign genealogy

Full chain →

Previously held by current licensee

  1. KP4OMIcancelled· E
    Walker-Guzman, Delmer OPRgranted 2019-02-26cancelled 2019-04-26
  2. WP4DMcancelled· G
    Walker-Guzman, Delmer OPRgranted 2014-12-18cancelled 2019-02-26

Prior holders later became

  1. KP4DWactive· E
    Walker-Guzman, Delmer OPRgranted 2026-04-17

License history

0 events

No recorded events.

More vanity slots coming available

From Puerto Rico

All →

Starting with KP4

All →