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WD4DDT

Available2x3District 4

Competitive callsign — 2 applications filed with the FCC.

License HolderTROBAUGH JR, ROBERT L

License ClassAdvanced

Min. Class RequiredTechnician

LocationBETHESDA, MD

Grant DateOct 3, 1989

Expiration DateOct 3, 1999

Cancellation DateOct 4, 2001

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WD4DDT

Available2x3District 4

Competitive callsign — 2 applications filed with the FCC.

License HolderTROBAUGH JR, ROBERT L

License ClassAdvanced

Min. Class RequiredTechnician

LocationBETHESDA, MD

Grant DateOct 3, 1989

Expiration DateOct 3, 1999

Cancellation DateOct 4, 2001

Available for ApplicationsOct 4, 2001

WD4DDT is a highly sought-after 2x3 format amateur radio callsign. The license is currently held by TROBAUGH JR, ROBERT L in BETHESDA, MD. 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 TATUM, DANNY D on Jul 21, 2025. WD4DDT has 1 recorded FCC license history event.

CW & Voice Analysis

Morse Code

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

CW Weight: 32 units(Moderate)

Voice Phonetics

Whiskey Delta Four Delta Delta Tango

Readability: 7.5/10(High readability)

This callsign is available now

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

License History

License ExpiredOct 4, 2001

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

TATUM, DANNY DFiled Jul 21, 2025
Not awardedFCC ↗
Traywick, Donald DFiled Feb 2, 2005
DismissedFCC ↗

Search external databases

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FCC data as of Jul 29, 2026

WD4DDT FCC Vanity Status: 2 Competing Applications & History