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WP4OSS

Available2x3District 4

Competitive callsign — 2 applications filed with the FCC.

License HolderMENDEZ PEREZ, RICARDO

License ClassTechnician

Min. Class RequiredTechnician

LocationMOCA, PR

Grant DateMay 31, 2013

Expiration DateMay 31, 2023

Cancellation DateJun 22, 2013

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WP4OSS

Available2x3District 4

Competitive callsign — 2 applications filed with the FCC.

License HolderMENDEZ PEREZ, RICARDO

License ClassTechnician

Min. Class RequiredTechnician

LocationMOCA, PR

Grant DateMay 31, 2013

Expiration DateMay 31, 2023

Cancellation DateJun 22, 2013

Available for ApplicationsJun 23, 2015

WP4OSS is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by MENDEZ PEREZ, RICARDO in MOCA, PR. This callsign has attracted significant interest in the amateur radio community, with 2 vanity applications filed with the FCC. The most recent was submitted by RIVERA MARTINEZ, OSVALDO A on Jun 28, 2022. WP4OSS has 3 recorded FCC license history events.

CW & Voice Analysis

Morse Code

.-- .--. ....- --- ... ...

CW Weight: 37 units(Moderate)

Voice Phonetics

Whiskey Papa Four Oscar Sierra Sierra

Readability: 6.5/10(Good readability)

This callsign is available now

Requires Technician license or higher to apply for this callsign format (2x3).

License History

License CanceledJun 22, 2013
System-Generated GrantMay 31, 2013
License IssuedMay 31, 2013

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

RIVERA MARTINEZ, OSVALDO AFiled Jun 28, 2022
DismissedFCC ↗
RIVERA MARTINEZ, OSVALDO AFiled Jun 28, 2022
DismissedFCC ↗

Search external databases

QRZ ↗HamQTH ↗

Explore nearby callsigns

← WP4OSR WP4OST →

FCC data as of Sep 12, 2026 — may be delayed

WP4OSS FCC Vanity Status: 2 Competing Applications & History