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KM4ZX

Available2x2District 4

Competitive callsign — 1 application filed with the FCC.

License HolderFOSTER, WALTER J

License ClassAdvanced

Min. Class RequiredGeneral

LocationMERRITT ISLAND, FL

Grant DateOct 31, 1989

Expiration DateOct 31, 1999

Cancellation DateFeb 28, 2002

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KM4ZX

Available2x2District 4

Competitive callsign — 1 application filed with the FCC.

License HolderFOSTER, WALTER J

License ClassAdvanced

Min. Class RequiredGeneral

LocationMERRITT ISLAND, FL

Grant DateOct 31, 1989

Expiration DateOct 31, 1999

Cancellation DateFeb 28, 2002

Available for ApplicationsNov 1, 2001

KM4ZX is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by FOSTER, WALTER J in MERRITT ISLAND, FL. This callsign has attracted significant interest in the amateur radio community, with 1 vanity application filed with the FCC. The most recent was submitted by Gray, Larry E on Feb 17, 2026. KM4ZX has 1 recorded FCC license history event.

CW & Voice Analysis

Morse Code

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

CW Weight: 36 units(Moderate)

Voice Phonetics

Kilo Mike Four Zulu X-ray

Readability: 8.5/10(High readability)

This callsign is available now

Requires General license or higher to apply for this callsign format (2x2).

License History

License ExpiredFeb 28, 2002

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

Gray, Larry EFiled Feb 17, 2026
Not awardedFCC ↗

Search external databases

QRZ ↗HamQTH ↗

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FCC data as of Jul 6, 2026

KM4ZX FCC Vanity Status: 1 Competing Application & History