Confidence: Medium · Source: FCC ULS · As of 2026-09-10

KA4ROB

Cancelled

Negron-Santini, Roberto

Location: Fajardo, PR
Class: Technician
Granted: 2019-06-25
Expires: 2029-06-25
Previous call: KP4BOB
FRN: 0020811014

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Vanity availability

Available

Available now

KA4ROB cleared its 2-year hold on 2022-09-01. Eligible for vanity application.

Last held by Negron-Santini, Roberto (PR).

Confidence: High

Cancelled licenses begin the 2-year hold immediately, so this date is the firm release date per §97.19. Already past — fileable subject to FCC verification.

Callsign genealogy

Full chain →

Previously held by current licensee

KP4BOBactive· T
Negron-Santini, RobertoPRgranted 2021-10-05
WP4OKcancelled· T
Negron-Santini, RobertoPRgranted 2020-09-01cancelled 2021-10-05

Prior holders later became

WP4OKcancelled· T
Negron-Santini, RobertoPRgranted 2020-09-01cancelled 2021-10-05

License history

0 events

No recorded events.

More vanity slots coming available

From Puerto Rico

All →

K5DTC 2026-09-14
WP4LKC 2026-09-14
KP4ECD 2026-09-16
WP3TU 2026-09-16
WP3TX 2026-09-16

Starting with KA4

All →

KA4GMC TN · 2026-09-16
KA4YBT TN · 2026-09-16
KA4NQG GA · 2026-09-21
KA4JAM NC · 2026-09-27
KA4LEN AL · 2026-09-30

Full history → Vanity availability → Callsign genealogy →