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WP4JFO

Available2x3District 4

No competing applications on record.

License HolderKRUMHOLTZ, CHARLES A

License ClassTechnician

Min. Class RequiredTechnician

LocationSAN MARCOS, TX

Grant DateJul 17, 1990

Expiration DateJul 17, 2000

Cancellation DateJul 18, 2002

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WP4JFO

Available2x3District 4

No competing applications on record.

License HolderKRUMHOLTZ, CHARLES A

License ClassTechnician

Min. Class RequiredTechnician

LocationSAN MARCOS, TX

Grant DateJul 17, 1990

Expiration DateJul 17, 2000

Cancellation DateJul 18, 2002

Available for ApplicationsJul 18, 2002

WP4JFO is a 2x3 format amateur radio callsign. It is currently registered to KRUMHOLTZ, CHARLES A in SAN MARCOS, TX. There are currently no competing vanity applications or pending FCC filings on record for this callsign. Add it to your watchlist to receive an immediate alert if another operator files a vanity application.

CW & Voice Analysis

Morse Code

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

CW Weight: 47 units(Heavy (slower to send))

Voice Phonetics

Whiskey Papa Four Juliet Foxtrot Oscar

Readability: 7/10(Good readability)

This callsign is available now

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

License History

License ExpiredJul 18, 2002

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

No competing applications on record. Verify on the FCC ULS application search before filing.

Search external databases

QRZ ↗HamQTH ↗

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FCC data as of Jul 28, 2026

Is WP4JFO Available? FCC Vanity Status & Watchlist