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N4OPS

Active1x3District 4

Competitive callsign — 5 applications filed with the FCC.

License HolderREBER, DONALD J

License ClassGeneral

Min. Class RequiredGeneral

LocationHighlands Ranch, CO

Grant DateMar 3, 2020

Expiration DateMar 3, 2030

N4OPS is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by REBER, DONALD J in Highlands Ranch, CO. This callsign has attracted significant interest in the amateur radio community, with 5 vanity applications filed with the FCC. The most recent was submitted by SAMMON III, DANIEL J on May 23, 2022. N4OPS has 5 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 31 units(Moderate)

Voice Phonetics

November Four Oscar Papa Sierra

Readability: 7/10(Good readability)

License History

Administrative Update AppliedJul 16, 2022
License RenewedMar 3, 2020
License ModifiedApr 27, 2009
License IssuedApr 21, 2009
Vanity Callsign GrantedApr 21, 2009

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

SAMMON III, DANIEL JFiled May 23, 2022
Not awardedFCC ↗
REBER, DONALD JFiled Apr 1, 2009
Not awardedFCC ↗
SEIERSEN, JOHN EFiled Jun 2, 2005
Not awardedFCC ↗
CALACHAN, NATHANIEL AFiled Sep 11, 2000

Search external databases

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Explore nearby callsigns

← N4OPR N4OPT →

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

Not awarded

GUEST, MARK AFiled Sep 11, 2000

Not awardedFCC ↗

N4OPS FCC Vanity Status: 5 Competing Applications & History