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K4PUP

Active1x3District 4

Competitive callsign — 5 applications filed with the FCC.

License HolderMayer, Donald

License ClassGeneral

Min. Class RequiredGeneral

LocationSEQUIM, WA

Grant DateJan 9, 2026

Expiration DateJan 9, 2036

K4PUP is a highly sought-after 1x3 format amateur radio callsign. The license is currently held by Mayer, Donald in SEQUIM, WA. 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 Mayer, Donald on Dec 22, 2025. K4PUP has 7 recorded FCC license history events.

CW & Voice Analysis

Morse Code

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

CW Weight: 35 units(Moderate)

Voice Phonetics

Kilo Four Papa Uniform Papa

Readability: 7.5/10(High readability)

License History

License IssuedJan 9, 2026
Vanity Callsign GrantedJan 9, 2026
License ExpiredApr 10, 2025
Vanity Callsign GrantedApr 9, 2013
License IssuedApr 9, 2013
License ExpiredMar 4, 2010
Authorization PrintedJan 16, 2009

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Mayer, DonaldFiled Dec 22, 2025
Not awardedFCC ↗
Pupius, Daniel FFiled Aug 12, 2025
Not awardedFCC ↗
Mayberry, Logan CFiled Jul 31, 2017
Not awardedFCC ↗
Woodruff, David JFiled Mar 20, 2013

Search external databases

QRZ ↗HamQTH ↗

Explore nearby callsigns

← K4PUN K4PUR →

FCC data as of Sep 3, 2026

Not awarded

Thoman, Eric JFiled Dec 17, 2012

Not awardedFCC ↗

K4PUP FCC Vanity Status: 5 Competing Applications & History